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HomeMy WebLinkAbout2020 Water Quality BrochureCity of Euless Texas Drinking Water Quality Report for 2020 www.eulesstx.gov/water 817-685-1581 Our Drinking Water is Safe! Euless drinking water is supplied by the Trinity River Authority (TRA) from Cedar Creek Lake and Richland Chambers Lake, as well as by Euless Water Wells which tap into the Trinity Aquifer. As water travels over land or through the ground, it dissolves naturally occurring minerals and, in some cases, radioactive material, and can pick up substances. Drinking water, including bottled water, may reasonably be expected to contain small amounts of some contaminants. This does not necessarily indicate that water poses a health risk. More information about contaminants and potential health effects can be obtained by calling the EPAs Safe Drinking Water Hotline (800) 426-4791. The Euless Annual Water Quality Report is created to provide you with important information about your drinking water. The City of Euless is a Public Water System and our drinking water either meets or exceeds all federal requirements as mandated by the Environmental Protection Agency. Special Notice: You may be more vulnerable than the general population to certain microbial contaminants, such as Cryptosporidium, in drinking water. Infants, some elderly, or immunocompromised persons such as those undergoing chemotherapy for cancer; persons who have undergone organ transplants; those who are undergoing treatment with steroids; and people with HIV/AIDS or other immune system disorders, can be particularly at risk from infections. You should seek advice about drinking water from your physician or health care providers. Additional guidelines on appropriate means to lesson the risk of infection by Cryptosporidium are available from the Safe Drinking Water Hotline. There are a lot of technical descriptions (beginning with the abbreviations listed below) in this report so we’ve tried to make it as user friendly as possible. These definitions are created by the EPA and are used across the nation by water providers to describe contaminants in the water system. A contaminant is anything in the water such as naturally occurring elements like zinc or calcium or water additives such as chlorine. Action Level (AL): The concentration of a contaminant which, if exceeded, prompts the water system to reduce the concentration of that contaminant. Conductivity: Measures the water’s ability to conduct electricity, which provides a measure of what is dissolved in water. A higher conductivity value indicates the presence of chemicals dissolved in the water. Level 1 Assessment – A Level 1 Assessment is a study of the water system to identify potential problems and determine (if possible) why total coliform bacteria were found. Level 2 Assessment – A Level 2 Assessment is a very detailed study of the water system to identify potential problems and determine (if possible) why an Escherichia coli (E. coli) maximum contaminant level (MCL) viola- tion has occurred and/or why total coliform bacteria were found on multiple occasions. Maximum Contaminant Level Goal (MCLG): The level of a contaminant in drinking water below which there is no known or expected risk to health. Established MCLGs allow for a margin of safety. Maximum Contaminant Level (MCL): The highest level of a contaminant that is allowed in drinking water. MCLs are set as close to the goal as feasible using the best available treatment technology. Maximum Residual Disinfectant Level Goal (MRDLG): The level of a drinking water disinfectant below which there is no known or expected risk to health. MRDLGs do not reflect the benefits of the use of disinfectants to control microbial contaminants. Maximum Residual Disinfectant Level (MRDL): The highest level of a disinfectant allowed in drinking water. There is convincing evidence that addition of a disinfectant is necessary for control of microbial contaminants. MFL: Million Fibers per Liter - a measure of asbestos. mrem: Millirems per Year - a measure of radiation absorbed by the body. N/A: Not applicable NTU: Nephelometric Turbidity Units – used to measure water turbidity or water clarity using a nephelometer. pCi/L: picocuries per liter (a measure of radioactivity) ppb: Parts per Billion or micrograms per liter (μg/L) ppm: Parts per Million or milligrams per liter (mg/L) TT: Treatment Technique - A process to reduce the level of a contaminant in drinking water. Turbidity: Turbidity is the clarity of water and it is an important factor in water quality. μmhos/cm: Micromhos per centimeter. Resistance, which is an electrical measurement expressed in ohms, is the opposite of conductivity. Conductivity is then expressed in reciprocal ohms. A more convenient unit of measurement in the chemical analysis of water is micromhos. Throughout this report you will notice many of the contaminants have two different numbers. That is because the City of Euless samples water from our water wells as well as from TRA, in addition to locations throughout our City. Este reporte incluye informacion importante sobre el agua para tomar. Si tiene preguntas o’ discusiones sobre este reporte en espanol, favor de llamar al tel. (817) 685-1586 para hablar con una persona bilingue en espanol. Throughout this report you will notice many of the contaminants have two different numbers. That is because the City of Euless samples water from our water wells as well as from TRA, in addition to locations throughout our City. Este reporte incluye informacion importante sobre el agua para tomar. Si tiene preguntas o’ discusiones sobre este reporte en espanol, favor de llamar al tel. (817) 685-1586 para hablar con una persona bilingue en espanol. Regulated Contaminants The EPA identifies contaminants to regulate in drinking water to protect public health. The agency sets the testing frequency and regulatory limits for the amounts of certain contaminants in water provided by public water systems. These standards are required by the Safe Water Drinking Act. Some contaminants are not required to be tested each year. Coliform Bacteria MCLG Total Coliform Maximum Contaminant Level Highest No. of Positive Fecal Coliform or E. Coli MCL Total No. of Positive E. Coli or Fecal Coliform Samples Violation Likely Source of Contamination 0 5% of monthly samples are positive. 6.2 0 0 N Naturally present in the environment. Lead and Copper Lead and Copper Date Sampled MCLG The 90th Percentile Action Level Site # Over Action Level Units Violation Likely Source of Contamination Copper 2020 1.3 0.21 1.3 0 ppm No Erosion of natural deposits; Corrosion of household plumbing systems. Lead 2020 0 2 15 0 ppb No Corrosion of plumbing systems; Erosion of natural deposits. Regulated Contaminants Disinfectants and Disinfection By-Products Collection Date Highest Level Detected Range of Levels Detected MCLG MCL Units Violation Likely Source of Contamination Arsenic 7/17/2019 Euless 0.001 0.001 – 0.001 0 0.01 ppb No Erosion of natural deposits; Runoff from orchards; Runoff from glass & electronics production wastes. Antimony (Total) 7/17/2019 Euless .001 .001 - .001 .006 .006 ppb No Naturally occurring element Atrazine 5/21/2020 TRA 0.3 0.3 – 0.3 3 3 ppb No Runoff from herbicide used on row crops. 6/14/2018 Euless 0.1 0.1 – 0.1 Barium 5/21/2020 TRA 0.041 0.041 - 0.041 2 2 ppm No Discharge of drilling wastes; Discharge from metal refineries; Erosion of natural deposits. 7/17/2019 Euless 0.51 0.051 – 0.051 Bromate 2020 TRA 7.92 <5 – 7.92 0 10* ppb No By-product of drinking water disinfection *Compliance based on Running Annual Average of monthly averages for Bromate at the end of each quarter, which was less than 5 ppb for each quarter in 2020. Chromium 7/17/2019 Euless 3.9 3.9 – 3.9 100 100 ppb No Discharge from Steel and Pulp mills 5/21/2020 TRA 1.6 1.6 – 1.6 Cyanide 5/21/2020 TRA 68.2 68.2 – 68.2 200 200 ppb No Discharge from steel/metal factories; Discharge from plastic and fertilizer factories. 11/3/2020 Euless 0.02 0.02 - 0.02 Fluoride 5/21/2020 TRA 0.449 0.449 – 0.449 4 4 ppm No Erosion of natural deposits; Water additive which promotes strong teeth; Discharge from fertilizer & aluminum factories. 11/3/2020 Euless 0.534 0.534 - 0.534 Nitrate (measured as Nitrogen) 5/21/2020 TRA 0.145 0.145 – 0.145 10 10 ppm No Runoff from fertilizer use; Leaching from septic tanks; Sewage; Erosion of natural deposits. 11/3/2020 Euless 1 0.32 – 0.69 Simazine 6/14/2018 Euless 0.06 0.06 – 0.06 4 4 ppb No Herbicide runoff 5/21/2020 TRA 0.060 0.060 – 0.060 Total Organic Carbon Removal ratio* 2020 TRA 1.62 1.02 – 1.62 None TT=1.0 None No Naturally present in the environment. *Removal ratio is the percent TOC removed by the treatment process divided by the percent of TOC removal required by TCEQ. Turbidity highest single measurement 2020 TRA 0.25 0.03 – 0.25 0 TT=1.0 NTU No Soil runoff. Good indicator of water quality & filtration. % of samples ≤ 0.3 NTU 2020 Lowest was 100 100 – 100 100 TT=95 % No Soil runoff. Good indicator of water quality & filtration. Haloacetic Acids (Haa5*) 11/3/20 Euless 17 2.7 - 24 N/A 60 ppb No By-product of drinking water disinfection Total Trihalomethanes 11/3/20 Euless 39 21.5 – 48.5 N/A 80 ppb No By-product of drinking water disinfection Not all sample results may have been used for calculating the Highest Level Detected because some results may be part of an evaluation to determine where compliance sampling should occur in the future. Unregulated Contaminants Contaminant Collection Date Highest Single Sample Range of Levels Detected Units Likely Source of Contamination Bromodichloromethane 9/23/2020 TRA 11.5 11.5 – 11.5 ppb By-product of drinking water chlorination. 7/18/2020 Euless 18.1 18.1 – 18.1 Chloroform 9/23/2020 TRA 11 11 – 11 ppb By-product of drinking water chlorination. 7/28/2020 Euless 22.4 22.4 – 22.4 Dibromochloromethane 9/23/2020 TRA 5.86 5.86 – 5.86 ppb By-product of drinking water chlorination. 7/28/2020 Euless 8.99 8.99 – 8.99 Radionuclides Contaminant Collection Date Highest Single Sample Range of Levels Detected MCLG MCL Units Violation Likely Source of Contamination Beta/photon emitters 5/11/2017 5.2 5.2 – 5.2 0* 50* pCi/L No Decay of natural and man-made deposits. *MCLG and MCL are given in exposure units of millirem/year (set as 0 and 4 respectively), but samples are measured in activity units of picoCuries/Liter (pCi/L). EPA considers 50 pCi/L to be the level of concern for Beta particles. Secondary and Other Constituents Not Regulated Contaminant Collection Date Highest Range of Levels Detected Secondary Limit Units Violation Likely Source of Contamination Acetone 9/23/2020 TRA 9.29 9.29 – 9.29 None ppb No By-product of drinking water chlorination. 11/3/2020 Euless 5.19 5.19 – 5.19 Aluminum 5/21/2020 TRA 36 36 - 36 200 ppb No Abundant naturally occurring element. 7/17/2019 Euless .021 .021 - .021 Bicarbonate [as Calcium carbonate] 5/21/2020 TRA 105 105 – 105 None ppm No Erosion of carbonate rocks such as limestone. Calcium 5/21/2020 TRA 44.8 44.8 – 44.8 None ppm No Abundant naturally occurring element. 11/3/2020 Euless 2.1 2.1 – 2.1 Chloride 5/21/2020 TRA 25.8 25.8 – 25.8 300 ppm No Abundant naturally occurring element. Used in water purification; By-product of oil field activity. 11/3/2020 Euless 24.3 24.3 – 24.3 Conductivity @ 25ºC 5/21/2020 TRA 415 415 – 415 None µmho/cm No Ability of water to conduct electricity due to electrolytes. 11/3/2020 Euless 357 357 – 357 Copper 5/21/2020 TRA 12 12 – 12 1000* ppb No Erosion of natural deposits; Corrosion of household plumbing. 6/16/2020 Euless 96 96 – 96 *This secondary limit is for Copper as a nuisance contaminant, apart from the primary list because it can stain fixtures and impart a bitter metallic taste to drinking water. Magnesium 5/21/2020 TRA 4.71 4.71 - 4.71 None ppm No Abundant naturally occurring element. 7/17/2019 Euless 0.62 0.62 - 0.62 Manganese 5/21/2020 TRA 2.8 2.8 - 2.8 50 ppb No Naturally occurring element. 7/17/2019 Euless 1.2 1.2 - 1.2 Secondary and Other Constituents Not Regulated (Continued) Contaminant Collection Date Highest Range of Levels Detected Secondary Limit Units Violation Likely Source of Contamination Unregulated Contaminants Coliform Bacteria MCLG Total Coliform Maximum Contaminant Level Highest No. of Positive Fecal Coliform or E. Coli MCL Total No. of Positive E. Coli or Fecal Coliform Samples Violation Likely Source of Contamination 0 5% of monthly samples are positive. 6.2 0 0 N Naturally present in the environment. Lead and Copper Lead and Copper Date Sampled MCLG The 90th Percentile Action Level Site # Over Action Level Units Violation Likely Source of Contamination Copper 2020 1.3 0.21 1.3 0 ppm No Erosion of natural deposits; Corrosion of household plumbing systems. Lead 2020 0 2 15 0 ppb No Corrosion of plumbing systems; Erosion of natural deposits. Regulated Contaminants Disinfectants and Disinfection By-Products Collection Date Highest Level Detected Range of Levels Detected MCLG MCL Units Violation Likely Source of Contamination Arsenic 7/17/2019 Euless 0.001 0.001 – 0.001 0 0.01 ppb No Erosion of natural deposits; Runoff from orchards; Runoff from glass & electronics production wastes. Antimony (Total) 7/17/2019 Euless .001 .001 - .001 .006 .006 ppb No Naturally occurring element Atrazine 5/21/2020 TRA 0.3 0.3 – 0.3 3 3 ppb No Runoff from herbicide used on row crops. 6/14/2018 Euless 0.1 0.1 – 0.1 Barium 5/21/2020 TRA 0.041 0.041 - 0.041 2 2 ppm No Discharge of drilling wastes; Discharge from metal refineries; Erosion of natural deposits. 7/17/2019 Euless 0.51 0.051 – 0.051 Bromate 2020 TRA 7.92 <5 – 7.92 0 10* ppb No By-product of drinking water disinfection *Compliance based on Running Annual Average of monthly averages for Bromate at the end of each quarter, which was less than 5 ppb for each quarter in 2020. Chromium 7/17/2019 Euless 3.9 3.9 – 3.9 100 100 ppb No Discharge from Steel and Pulp mills 5/21/2020 TRA 1.6 1.6 – 1.6 Cyanide 5/21/2020 TRA 68.2 68.2 – 68.2 200 200 ppb No Discharge from steel/metal factories; Discharge from plastic and fertilizer factories. 11/3/2020 Euless 0.02 0.02 - 0.02 Fluoride 5/21/2020 TRA 0.449 0.449 – 0.449 4 4 ppm No Erosion of natural deposits; Water additive which promotes strong teeth; Discharge from fertilizer & aluminum factories. 11/3/2020 Euless 0.534 0.534 - 0.534 Nitrate (measured as Nitrogen) 5/21/2020 TRA 0.145 0.145 – 0.145 10 10 ppm No Runoff from fertilizer use; Leaching from septic tanks; Sewage; Erosion of natural deposits. 11/3/2020 Euless 1 0.32 – 0.69 Simazine 6/14/2018 Euless 0.06 0.06 – 0.06 4 4 ppb No Herbicide runoff 5/21/2020 TRA 0.060 0.060 – 0.060 Total Organic Carbon Removal ratio* 2020 TRA 1.62 1.02 – 1.62 None TT=1.0 None No Naturally present in the environment. *Removal ratio is the percent TOC removed by the treatment process divided by the percent of TOC removal required by TCEQ. Turbidity highest single measurement 2020 TRA 0.25 0.03 – 0.25 0 TT=1.0 NTU No Soil runoff. Good indicator of water quality & filtration. % of samples ≤ 0.3 NTU 2020 Lowest was 100 100 – 100 100 TT=95 % No Soil runoff. Good indicator of water quality & filtration. Haloacetic Acids (Haa5*) 11/3/20 Euless 17 2.7 - 24 N/A 60 ppb No By-product of drinking water disinfection Total Trihalomethanes 11/3/20 Euless 39 21.5 – 48.5 N/A 80 ppb No By-product of drinking water disinfection Not all sample results may have been used for calculating the Highest Level Detected because some results may be part of an evaluation to determine where compliance sampling should occur in the future. Unregulated Contaminants Contaminant Collection Date Highest Single Sample Range of Levels Detected Units Likely Source of Contamination Bromodichloromethane 9/23/2020 TRA 11.5 11.5 – 11.5 ppb By-product of drinking water chlorination. 7/18/2020 Euless 18.1 18.1 – 18.1 Chloroform 9/23/2020 TRA 11 11 – 11 ppb By-product of drinking water chlorination. 7/28/2020 Euless 22.4 22.4 – 22.4 Dibromochloromethane 9/23/2020 TRA 5.86 5.86 – 5.86 ppb By-product of drinking water chlorination. 7/28/2020 Euless 8.99 8.99 – 8.99 Radionuclides Contaminant Collection Date Highest Single Sample Range of Levels Detected MCLG MCL Units Violation Likely Source of Contamination Beta/photon emitters 5/11/2017 5.2 5.2 – 5.2 0* 50* pCi/L No Decay of natural and man-made deposits. *MCLG and MCL are given in exposure units of millirem/year (set as 0 and 4 respectively), but samples are measured in activity units of picoCuries/Liter (pCi/L). EPA considers 50 pCi/L to be the level of concern for Beta particles. Secondary and Other Constituents Not Regulated Contaminant Collection Date Highest Range of Levels Detected Secondary Limit Units Violation Likely Source of Contamination Acetone 9/23/2020 TRA 9.29 9.29 – 9.29 None ppb No By-product of drinking water chlorination. 11/3/2020 Euless 5.19 5.19 – 5.19 Aluminum 5/21/2020 TRA 36 36 - 36 200 ppb No Abundant naturally occurring element. 7/17/2019 Euless .021 .021 - .021 Bicarbonate [as Calcium carbonate] 5/21/2020 TRA 105 105 – 105 None ppm No Erosion of carbonate rocks such as limestone. Calcium 5/21/2020 TRA 44.8 44.8 – 44.8 None ppm No Abundant naturally occurring element. 11/3/2020 Euless 2.1 2.1 – 2.1 Chloride 5/21/2020 TRA 25.8 25.8 – 25.8 300 ppm No Abundant naturally occurring element. Used in water purification; By-product of oil field activity. 11/3/2020 Euless 24.3 24.3 – 24.3 Conductivity @ 25ºC 5/21/2020 TRA 415 415 – 415 None µmho/cm No Ability of water to conduct electricity due to electrolytes. 11/3/2020 Euless 357 357 – 357 Copper 5/21/2020 TRA 12 12 – 12 1000* ppb No Erosion of natural deposits; Corrosion of household plumbing. 6/16/2020 Euless 96 96 – 96 *This secondary limit is for Copper as a nuisance contaminant, apart from the primary list because it can stain fixtures and impart a bitter metallic taste to drinking water. Magnesium 5/21/2020 TRA 4.71 4.71 - 4.71 None ppm No Abundant naturally occurring element. 7/17/2019 Euless 0.62 0.62 - 0.62 Manganese 5/21/2020 TRA 2.8 2.8 - 2.8 50 ppb No Naturally occurring element. 7/17/2019 Euless 1.2 1.2 - 1.2 Secondary and Other Constituents Not Regulated (Continued) Contaminant Collection Date Highest Range of Levels Detected Secondary Limit Units Violation Likely Source of Contamination Unregulated Contaminants are those for which the EPA has not established drinking water standards. The purpose of unregulated contaminant monitoring is to assist the EPA in determining the occurrence of unregulated contaminants in drinking water and whether future regulation is warranted. Because these contaminants are not regulated, there is not a Maximum Contaminant Level or Maximum Contaminant Level Goal. Coliforms are bacteria that are naturally present in the environment and are used as an indicator that other, potentially harmful, waterborne pathogens may be present or that a potential pathway exists through which contamination may enter the drinking water distribution system. We found coliforms indicating the need to look for potential problems in water treatment or distribution. When this occurs, we are required to conduct assessment(s) to identify problems and to correct any problems that were found during these assessments. During the past year we were required to conduct one Level 1 assessment. One Level 1 assessment was completed. In addition, we were required to take one corrective action and we completed one of these actions. Regulated Contaminants Continued Coliform Bacteria MCLG Total Coliform Maximum Contaminant Level Highest No. of Positive Fecal Coliform or E. Coli MCL Total No. of Positive E. Coli or Fecal Coliform Samples Violation Likely Source of Contamination 0 5% of monthly samples are positive. 6.2 0 0 N Naturally present in the environment. Lead and Copper Lead and Copper Date Sampled MCLG The 90th Percentile Action Level Site # Over Action Level Units Violation Likely Source of Contamination Copper 2020 1.3 0.21 1.3 0 ppm No Erosion of natural deposits; Corrosion of household plumbing systems. Lead 2020 0 2 15 0 ppb No Corrosion of plumbing systems; Erosion of natural deposits. Regulated Contaminants Disinfectants and Disinfection By-Products Collection Date Highest Level Detected Range of Levels Detected MCLG MCL Units Violation Likely Source of Contamination Arsenic 7/17/2019 Euless 0.001 0.001 – 0.001 0 0.01 ppb No Erosion of natural deposits; Runoff from orchards; Runoff from glass & electronics production wastes. Antimony (Total) 7/17/2019 Euless .001 .001 - .001 .006 .006 ppb No Naturally occurring element Atrazine 5/21/2020 TRA 0.3 0.3 – 0.3 3 3 ppb No Runoff from herbicide used on row crops. 6/14/2018 Euless 0.1 0.1 – 0.1 Barium 5/21/2020 TRA 0.041 0.041 - 0.041 2 2 ppm No Discharge of drilling wastes; Discharge from metal refineries; Erosion of natural deposits. 7/17/2019 Euless 0.51 0.051 – 0.051 Bromate 2020 TRA 7.92 <5 – 7.92 0 10* ppb No By-product of drinking water disinfection *Compliance based on Running Annual Average of monthly averages for Bromate at the end of each quarter, which was less than 5 ppb for each quarter in 2020. Chromium 7/17/2019 Euless 3.9 3.9 – 3.9 100 100 ppb No Discharge from Steel and Pulp mills 5/21/2020 TRA 1.6 1.6 – 1.6 Cyanide 5/21/2020 TRA 68.2 68.2 – 68.2 200 200 ppb No Discharge from steel/metal factories; Discharge from plastic and fertilizer factories. 11/3/2020 Euless 0.02 0.02 - 0.02 Fluoride 5/21/2020 TRA 0.449 0.449 – 0.449 4 4 ppm No Erosion of natural deposits; Water additive which promotes strong teeth; Discharge from fertilizer & aluminum factories. 11/3/2020 Euless 0.534 0.534 - 0.534 Nitrate (measured as Nitrogen) 5/21/2020 TRA 0.145 0.145 – 0.145 10 10 ppm No Runoff from fertilizer use; Leaching from septic tanks; Sewage; Erosion of natural deposits. 11/3/2020 Euless 1 0.32 – 0.69 Simazine 6/14/2018 Euless 0.06 0.06 – 0.06 4 4 ppb No Herbicide runoff 5/21/2020 TRA 0.060 0.060 – 0.060 Total Organic Carbon Removal ratio* 2020 TRA 1.62 1.02 – 1.62 None TT=1.0 None No Naturally present in the environment. *Removal ratio is the percent TOC removed by the treatment process divided by the percent of TOC removal required by TCEQ. Turbidity highest single measurement 2020 TRA 0.25 0.03 – 0.25 0 TT=1.0 NTU No Soil runoff. Good indicator of water quality & filtration. % of samples ≤ 0.3 NTU 2020 Lowest was 100 100 – 100 100 TT=95 % No Soil runoff. Good indicator of water quality & filtration. Haloacetic Acids (Haa5*) 11/3/20 Euless 17 2.7 - 24 N/A 60 ppb No By-product of drinking water disinfection Total Trihalomethanes 11/3/20 Euless 39 21.5 – 48.5 N/A 80 ppb No By-product of drinking water disinfection Not all sample results may have been used for calculating the Highest Level Detected because some results may be part of an evaluation to determine where compliance sampling should occur in the future. Unregulated Contaminants Contaminant Collection Date Highest Single Sample Range of Levels Detected Units Likely Source of Contamination Bromodichloromethane 9/23/2020 TRA 11.5 11.5 – 11.5 ppb By-product of drinking water chlorination. 7/18/2020 Euless 18.1 18.1 – 18.1 Chloroform 9/23/2020 TRA 11 11 – 11 ppb By-product of drinking water chlorination. 7/28/2020 Euless 22.4 22.4 – 22.4 Dibromochloromethane 9/23/2020 TRA 5.86 5.86 – 5.86 ppb By-product of drinking water chlorination. 7/28/2020 Euless 8.99 8.99 – 8.99 Radionuclides Contaminant Collection Date Highest Single Sample Range of Levels Detected MCLG MCL Units Violation Likely Source of Contamination Beta/photon emitters 5/11/2017 5.2 5.2 – 5.2 0* 50* pCi/L No Decay of natural and man-made deposits. *MCLG and MCL are given in exposure units of millirem/year (set as 0 and 4 respectively), but samples are measured in activity units of picoCuries/Liter (pCi/L). EPA considers 50 pCi/L to be the level of concern for Beta particles. Secondary and Other Constituents Not Regulated Contaminant Collection Date Highest Range of Levels Detected Secondary Limit Units Violation Likely Source of Contamination Acetone 9/23/2020 TRA 9.29 9.29 – 9.29 None ppb No By-product of drinking water chlorination. 11/3/2020 Euless 5.19 5.19 – 5.19 Aluminum 5/21/2020 TRA 36 36 - 36 200 ppb No Abundant naturally occurring element. 7/17/2019 Euless .021 .021 - .021 Bicarbonate [as Calcium carbonate] 5/21/2020 TRA 105 105 – 105 None ppm No Erosion of carbonate rocks such as limestone. Calcium 5/21/2020 TRA 44.8 44.8 – 44.8 None ppm No Abundant naturally occurring element. 11/3/2020 Euless 2.1 2.1 – 2.1 Chloride 5/21/2020 TRA 25.8 25.8 – 25.8 300 ppm No Abundant naturally occurring element. Used in water purification; By-product of oil field activity. 11/3/2020 Euless 24.3 24.3 – 24.3 Conductivity @ 25ºC 5/21/2020 TRA 415 415 – 415 None µmho/cm No Ability of water to conduct electricity due to electrolytes. 11/3/2020 Euless 357 357 – 357 Copper 5/21/2020 TRA 12 12 – 12 1000* ppb No Erosion of natural deposits; Corrosion of household plumbing. 6/16/2020 Euless 96 96 – 96 *This secondary limit is for Copper as a nuisance contaminant, apart from the primary list because it can stain fixtures and impart a bitter metallic taste to drinking water. Magnesium 5/21/2020 TRA 4.71 4.71 - 4.71 None ppm No Abundant naturally occurring element. 7/17/2019 Euless 0.62 0.62 - 0.62 Manganese 5/21/2020 TRA 2.8 2.8 - 2.8 50 ppb No Naturally occurring element. 7/17/2019 Euless 1.2 1.2 - 1.2 Secondary and Other Constituents Not Regulated (Continued) Contaminant Collection Date Highest Range of Levels Detected Secondary Limit Units Violation Likely Source of Contamination Zinc 5/21/2020 TRA 6.4 6.4 – 6.4 5000 ppb No Naturally occurring element 7/17/2019 Euless 5 5 – 5 Potassium 5/21/2020 TRA 4.23 4.23 – 4.23 None ppm No Naturally occurring element. 7/17/2019 Euless 1.31 1.31 – 1.31 pH 2020 TRA 8.9 7.3 – 8.9 >7.0 pH unit No Measure of the corrosivity of water. 2020 Euless 8.2 7.3 – 8.2 Sodium 5/21/2020 TRA 32.4 32.4 – 32.4 None ppm No Abundant naturally occurring element: By-product of oil field activity. 7/17/2019 Euless 334.0 334 – 334 Sulfate 5/21/2020 TRA 55.9 55.9 – 55.9 300 ppm No Naturally occurring constituent; Common industrial by-product; By-product of oil field activity. 11/3/2020 Euless 48.2 48.2 – 48.2 Total Alkalinity [as calcium carbonate] 5/21/2020 TRA 107 107 – 107 None ppm No Naturally occurring soluble mineral salts. 11/3/2020 Euless 79.8 79.8 – 79.8 Total Dissolved Solids 5/21/2020 TRA 231 231 – 231 1000 ppm No Total dissolved mineral constituents in water. 11/3/2020 Euless 208 208 – 208 Total Hardness [as Calcium carbonate] 5/21/2020 TRA 131 131 – 131 None ppm No Naturally occurring soluble Calcium and Magnesium deposits. 7/17/2019 Euless 7.84 7.84 – 7.84 Radioactive Contaminants Collection Date Highest Level Detected Range of Levels Detected MCLG MCL Units Violation Likely Source of Contamination Combined Radium 226/228 1/22/2015 1.5 1.5 – 1.5 0 5 PCI/L No Erosion of natural deposits. Annual Chlorine Residual Chlorine Residual Year Average Level Range of Levels Detected MRDL MRDLG Units Violation Source in Drinking Water Chlorine Residual 2020 2.2 0.5 - 4.0 4 4 Mg/l No Chlorine is a water additive used to control microbes. Coliform Bacteria MCLG Total Coliform Maximum Contaminant Level Highest No. of Positive Fecal Coliform or E. Coli MCL Total No. of Positive E. Coli or Fecal Coliform Samples Violation Likely Source of Contamination 0 5% of monthly samples are positive. 6.2 0 0 N Naturally present in the environment. Lead and Copper Lead and Copper Date Sampled MCLG The 90th Percentile Action Level Site # Over Action Level Units Violation Likely Source of Contamination Copper 2020 1.3 0.21 1.3 0 ppm No Erosion of natural deposits; Corrosion of household plumbing systems. Lead 2020 0 2 15 0 ppb No Corrosion of plumbing systems; Erosion of natural deposits. Regulated Contaminants Disinfectants and Disinfection By-Products Collection Date Highest Level Detected Range of Levels Detected MCLG MCL Units Violation Likely Source of Contamination Arsenic 7/17/2019 Euless 0.001 0.001 – 0.001 0 0.01 ppb No Erosion of natural deposits; Runoff from orchards; Runoff from glass & electronics production wastes. Antimony (Total) 7/17/2019 Euless .001 .001 - .001 .006 .006 ppb No Naturally occurring element Atrazine 5/21/2020 TRA 0.3 0.3 – 0.3 3 3 ppb No Runoff from herbicide used on row crops. 6/14/2018 Euless 0.1 0.1 – 0.1 Barium 5/21/2020 TRA 0.041 0.041 - 0.041 2 2 ppm No Discharge of drilling wastes; Discharge from metal refineries; Erosion of natural deposits. 7/17/2019 Euless 0.51 0.051 – 0.051 Bromate 2020 TRA 7.92 <5 – 7.92 0 10* ppb No By-product of drinking water disinfection *Compliance based on Running Annual Average of monthly averages for Bromate at the end of each quarter, which was less than 5 ppb for each quarter in 2020. Chromium 7/17/2019 Euless 3.9 3.9 – 3.9 100 100 ppb No Discharge from Steel and Pulp mills 5/21/2020 TRA 1.6 1.6 – 1.6 Cyanide 5/21/2020 TRA 68.2 68.2 – 68.2 200 200 ppb No Discharge from steel/metal factories; Discharge from plastic and fertilizer factories. 11/3/2020 Euless 0.02 0.02 - 0.02 Fluoride 5/21/2020 TRA 0.449 0.449 – 0.449 4 4 ppm No Erosion of natural deposits; Water additive which promotes strong teeth; Discharge from fertilizer & aluminum factories. 11/3/2020 Euless 0.534 0.534 - 0.534 Nitrate (measured as Nitrogen) 5/21/2020 TRA 0.145 0.145 – 0.145 10 10 ppm No Runoff from fertilizer use; Leaching from septic tanks; Sewage; Erosion of natural deposits. 11/3/2020 Euless 1 0.32 – 0.69 Simazine 6/14/2018 Euless 0.06 0.06 – 0.06 4 4 ppb No Herbicide runoff 5/21/2020 TRA 0.060 0.060 – 0.060 Total Organic Carbon Removal ratio* 2020 TRA 1.62 1.02 – 1.62 None TT=1.0 None No Naturally present in the environment. *Removal ratio is the percent TOC removed by the treatment process divided by the percent of TOC removal required by TCEQ. Turbidity highest single measurement 2020 TRA 0.25 0.03 – 0.25 0 TT=1.0 NTU No Soil runoff. Good indicator of water quality & filtration. % of samples ≤ 0.3 NTU 2020 Lowest was 100 100 – 100 100 TT=95 % No Soil runoff. Good indicator of water quality & filtration. Haloacetic Acids (Haa5*) 11/3/20 Euless 17 2.7 - 24 N/A 60 ppb No By-product of drinking water disinfection Total Trihalomethanes 11/3/20 Euless 39 21.5 – 48.5 N/A 80 ppb No By-product of drinking water disinfection Not all sample results may have been used for calculating the Highest Level Detected because some results may be part of an evaluation to determine where compliance sampling should occur in the future. Unregulated Contaminants Contaminant Collection Date Highest Single Sample Range of Levels Detected Units Likely Source of Contamination Bromodichloromethane 9/23/2020 TRA 11.5 11.5 – 11.5 ppb By-product of drinking water chlorination. 7/18/2020 Euless 18.1 18.1 – 18.1 Chloroform 9/23/2020 TRA 11 11 – 11 ppb By-product of drinking water chlorination. 7/28/2020 Euless 22.4 22.4 – 22.4 Dibromochloromethane 9/23/2020 TRA 5.86 5.86 – 5.86 ppb By-product of drinking water chlorination. 7/28/2020 Euless 8.99 8.99 – 8.99 Radionuclides Contaminant Collection Date Highest Single Sample Range of Levels Detected MCLG MCL Units Violation Likely Source of Contamination Beta/photon emitters 5/11/2017 5.2 5.2 – 5.2 0* 50* pCi/L No Decay of natural and man-made deposits. *MCLG and MCL are given in exposure units of millirem/year (set as 0 and 4 respectively), but samples are measured in activity units of picoCuries/Liter (pCi/L). EPA considers 50 pCi/L to be the level of concern for Beta particles. Secondary and Other Constituents Not Regulated Contaminant Collection Date Highest Range of Levels Detected Secondary Limit Units Violation Likely Source of Contamination Acetone 9/23/2020 TRA 9.29 9.29 – 9.29 None ppb No By-product of drinking water chlorination. 11/3/2020 Euless 5.19 5.19 – 5.19 Aluminum 5/21/2020 TRA 36 36 - 36 200 ppb No Abundant naturally occurring element. 7/17/2019 Euless .021 .021 - .021 Bicarbonate [as Calcium carbonate] 5/21/2020 TRA 105 105 – 105 None ppm No Erosion of carbonate rocks such as limestone. Calcium 5/21/2020 TRA 44.8 44.8 – 44.8 None ppm No Abundant naturally occurring element. 11/3/2020 Euless 2.1 2.1 – 2.1 Chloride 5/21/2020 TRA 25.8 25.8 – 25.8 300 ppm No Abundant naturally occurring element. Used in water purification; By-product of oil field activity. 11/3/2020 Euless 24.3 24.3 – 24.3 Conductivity @ 25ºC 5/21/2020 TRA 415 415 – 415 None µmho/cm No Ability of water to conduct electricity due to electrolytes. 11/3/2020 Euless 357 357 – 357 Copper 5/21/2020 TRA 12 12 – 12 1000* ppb No Erosion of natural deposits; Corrosion of household plumbing. 6/16/2020 Euless 96 96 – 96 *This secondary limit is for Copper as a nuisance contaminant, apart from the primary list because it can stain fixtures and impart a bitter metallic taste to drinking water. Magnesium 5/21/2020 TRA 4.71 4.71 - 4.71 None ppm No Abundant naturally occurring element. 7/17/2019 Euless 0.62 0.62 - 0.62 Manganese 5/21/2020 TRA 2.8 2.8 - 2.8 50 ppb No Naturally occurring element. 7/17/2019 Euless 1.2 1.2 - 1.2 Secondary and Other Constituents Not Regulated (Continued) Contaminant Collection Date Highest Range of Levels Detected Secondary Limit Units Violation Likely Source of Contamination Secondary and Other Not Regulated Constituents At times there are other “constituents” or concentrations of substances found in drinking water that cause a change to our typical taste, color and odor. Most secondary constituents are naturally occurring and are not cause for health concern. We report information about these secondary constituents to help you in making a determination about the taste, odor and appearance of your water. Coliform Bacteria MCLG Total Coliform Maximum Contaminant Level Highest No. of Positive Fecal Coliform or E. Coli MCL Total No. of Positive E. Coli or Fecal Coliform Samples Violation Likely Source of Contamination 0 5% of monthly samples are positive. 6.2 0 0 N Naturally present in the environment. Lead and Copper Lead and Copper Date Sampled MCLG The 90th Percentile Action Level Site # Over Action Level Units Violation Likely Source of Contamination Copper 2020 1.3 0.21 1.3 0 ppm No Erosion of natural deposits; Corrosion of household plumbing systems. Lead 2020 0 2 15 0 ppb No Corrosion of plumbing systems; Erosion of natural deposits. Regulated Contaminants Disinfectants and Disinfection By-Products Collection Date Highest Level Detected Range of Levels Detected MCLG MCL Units Violation Likely Source of Contamination Arsenic 7/17/2019 Euless 0.001 0.001 – 0.001 0 0.01 ppb No Erosion of natural deposits; Runoff from orchards; Runoff from glass & electronics production wastes. Antimony (Total) 7/17/2019 Euless .001 .001 - .001 .006 .006 ppb No Naturally occurring element Atrazine 5/21/2020 TRA 0.3 0.3 – 0.3 3 3 ppb No Runoff from herbicide used on row crops. 6/14/2018 Euless 0.1 0.1 – 0.1 Barium 5/21/2020 TRA 0.041 0.041 - 0.041 2 2 ppm No Discharge of drilling wastes; Discharge from metal refineries; Erosion of natural deposits. 7/17/2019 Euless 0.51 0.051 – 0.051 Bromate 2020 TRA 7.92 <5 – 7.92 0 10* ppb No By-product of drinking water disinfection *Compliance based on Running Annual Average of monthly averages for Bromate at the end of each quarter, which was less than 5 ppb for each quarter in 2020. Chromium 7/17/2019 Euless 3.9 3.9 – 3.9 100 100 ppb No Discharge from Steel and Pulp mills 5/21/2020 TRA 1.6 1.6 – 1.6 Cyanide 5/21/2020 TRA 68.2 68.2 – 68.2 200 200 ppb No Discharge from steel/metal factories; Discharge from plastic and fertilizer factories. 11/3/2020 Euless 0.02 0.02 - 0.02 Fluoride 5/21/2020 TRA 0.449 0.449 – 0.449 4 4 ppm No Erosion of natural deposits; Water additive which promotes strong teeth; Discharge from fertilizer & aluminum factories. 11/3/2020 Euless 0.534 0.534 - 0.534 Nitrate (measured as Nitrogen) 5/21/2020 TRA 0.145 0.145 – 0.145 10 10 ppm No Runoff from fertilizer use; Leaching from septic tanks; Sewage; Erosion of natural deposits. 11/3/2020 Euless 1 0.32 – 0.69 Simazine 6/14/2018 Euless 0.06 0.06 – 0.06 4 4 ppb No Herbicide runoff 5/21/2020 TRA 0.060 0.060 – 0.060 Total Organic Carbon Removal ratio* 2020 TRA 1.62 1.02 – 1.62 None TT=1.0 None No Naturally present in the environment. *Removal ratio is the percent TOC removed by the treatment process divided by the percent of TOC removal required by TCEQ. Turbidity highest single measurement 2020 TRA 0.25 0.03 – 0.25 0 TT=1.0 NTU No Soil runoff. Good indicator of water quality & filtration. % of samples ≤ 0.3 NTU 2020 Lowest was 100 100 – 100 100 TT=95 % No Soil runoff. Good indicator of water quality & filtration. Haloacetic Acids (Haa5*) 11/3/20 Euless 17 2.7 - 24 N/A 60 ppb No By-product of drinking water disinfection Total Trihalomethanes 11/3/20 Euless 39 21.5 – 48.5 N/A 80 ppb No By-product of drinking water disinfection Not all sample results may have been used for calculating the Highest Level Detected because some results may be part of an evaluation to determine where compliance sampling should occur in the future. Unregulated Contaminants Contaminant Collection Date Highest Single Sample Range of Levels Detected Units Likely Source of Contamination Bromodichloromethane 9/23/2020 TRA 11.5 11.5 – 11.5 ppb By-product of drinking water chlorination. 7/18/2020 Euless 18.1 18.1 – 18.1 Chloroform 9/23/2020 TRA 11 11 – 11 ppb By-product of drinking water chlorination. 7/28/2020 Euless 22.4 22.4 – 22.4 Dibromochloromethane 9/23/2020 TRA 5.86 5.86 – 5.86 ppb By-product of drinking water chlorination. 7/28/2020 Euless 8.99 8.99 – 8.99 Radionuclides Contaminant Collection Date Highest Single Sample Range of Levels Detected MCLG MCL Units Violation Likely Source of Contamination Beta/photon emitters 5/11/2017 5.2 5.2 – 5.2 0* 50* pCi/L No Decay of natural and man-made deposits. *MCLG and MCL are given in exposure units of millirem/year (set as 0 and 4 respectively), but samples are measured in activity units of picoCuries/Liter (pCi/L). EPA considers 50 pCi/L to be the level of concern for Beta particles. Secondary and Other Constituents Not Regulated Contaminant Collection Date Highest Range of Levels Detected Secondary Limit Units Violation Likely Source of Contamination Acetone 9/23/2020 TRA 9.29 9.29 – 9.29 None ppb No By-product of drinking water chlorination. 11/3/2020 Euless 5.19 5.19 – 5.19 Aluminum 5/21/2020 TRA 36 36 - 36 200 ppb No Abundant naturally occurring element. 7/17/2019 Euless .021 .021 - .021 Bicarbonate [as Calcium carbonate] 5/21/2020 TRA 105 105 – 105 None ppm No Erosion of carbonate rocks such as limestone. Calcium 5/21/2020 TRA 44.8 44.8 – 44.8 None ppm No Abundant naturally occurring element. 11/3/2020 Euless 2.1 2.1 – 2.1 Chloride 5/21/2020 TRA 25.8 25.8 – 25.8 300 ppm No Abundant naturally occurring element. Used in water purification; By-product of oil field activity. 11/3/2020 Euless 24.3 24.3 – 24.3 Conductivity @ 25ºC 5/21/2020 TRA 415 415 – 415 None µmho/cm No Ability of water to conduct electricity due to electrolytes. 11/3/2020 Euless 357 357 – 357 Copper 5/21/2020 TRA 12 12 – 12 1000* ppb No Erosion of natural deposits; Corrosion of household plumbing. 6/16/2020 Euless 96 96 – 96 *This secondary limit is for Copper as a nuisance contaminant, apart from the primary list because it can stain fixtures and impart a bitter metallic taste to drinking water. Magnesium 5/21/2020 TRA 4.71 4.71 - 4.71 None ppm No Abundant naturally occurring element. 7/17/2019 Euless 0.62 0.62 - 0.62 Manganese 5/21/2020 TRA 2.8 2.8 - 2.8 50 ppb No Naturally occurring element. 7/17/2019 Euless 1.2 1.2 - 1.2 Secondary and Other Constituents Not Regulated (Continued) Contaminant Collection Date Highest Range of Levels Detected Secondary Limit Units Violation Likely Source of Contamination Zinc 5/21/2020 TRA 6.4 6.4 – 6.4 5000 ppb No Naturally occurring element 7/17/2019 Euless 5 5 – 5 Potassium 5/21/2020 TRA 4.23 4.23 – 4.23 None ppm No Naturally occurring element. 7/17/2019 Euless 1.31 1.31 – 1.31 pH 2020 TRA 8.9 7.3 – 8.9 >7.0 pH unit No Measure of the corrosivity of water. 2020 Euless 8.2 7.3 – 8.2 Sodium 5/21/2020 TRA 32.4 32.4 – 32.4 None ppm No Abundant naturally occurring element: By-product of oil field activity. 7/17/2019 Euless 334.0 334 – 334 Sulfate 5/21/2020 TRA 55.9 55.9 – 55.9 300 ppm No Naturally occurring constituent; Common industrial by-product; By-product of oil field activity. 11/3/2020 Euless 48.2 48.2 – 48.2 Total Alkalinity [as calcium carbonate] 5/21/2020 TRA 107 107 – 107 None ppm No Naturally occurring soluble mineral salts. 11/3/2020 Euless 79.8 79.8 – 79.8 Total Dissolved Solids 5/21/2020 TRA 231 231 – 231 1000 ppm No Total dissolved mineral constituents in water. 11/3/2020 Euless 208 208 – 208 Total Hardness [as Calcium carbonate] 5/21/2020 TRA 131 131 – 131 None ppm No Naturally occurring soluble Calcium and Magnesium deposits. 7/17/2019 Euless 7.84 7.84 – 7.84 Radioactive Contaminants Collection Date Highest Level Detected Range of Levels Detected MCLG MCL Units Violation Likely Source of Contamination Combined Radium 226/228 1/22/2015 1.5 1.5 – 1.5 0 5 PCI/L No Erosion of natural deposits. Annual Chlorine Residual Chlorine Residual Year Average Level Range of Levels Detected MRDL MRDLG Units Violation Source in Drinking Water Chlorine Residual 2020 2.2 0.5 - 4.0 4 4 Mg/l No Chlorine is a water additive used to control microbes. You may request to have your water tested. Information on lead in drinking water, testing methods and steps you can take to minimize exposure is available from the Safe Drinking Water Hotline 1-800-426-4791 or at www.epa.gov/safewater/lead. Copper, Lead and Chlorine If present, elevated levels of lead can lead to serious health problems, especially for pregnant women and young children. Lead in drinking water is primarily from materials and components associated with service lines and private plumbing. We monitor drinking water at customer taps. If action levels for lead or copper are exceeded, we will inform the public about steps you must take to protect your health. Zinc 5/21/2020 TRA 6.4 6.4 – 6.4 5000 ppb No Naturally occurring element 7/17/2019 Euless 5 5 – 5 Potassium 5/21/2020 TRA 4.23 4.23 – 4.23 None ppm No Naturally occurring element. 7/17/2019 Euless 1.31 1.31 – 1.31 pH 2020 TRA 8.9 7.3 – 8.9 >7.0 pH unit No Measure of the corrosivity of water. 2020 Euless 8.2 7.3 – 8.2 Sodium 5/21/2020 TRA 32.4 32.4 – 32.4 None ppm No Abundant naturally occurring element: By-product of oil field activity. 7/17/2019 Euless 334.0 334 – 334 Sulfate 5/21/2020 TRA 55.9 55.9 – 55.9 300 ppm No Naturally occurring constituent; Common industrial by-product; By-product of oil field activity. 11/3/2020 Euless 48.2 48.2 – 48.2 Total Alkalinity [as calcium carbonate] 5/21/2020 TRA 107 107 – 107 None ppm No Naturally occurring soluble mineral salts. 11/3/2020 Euless 79.8 79.8 – 79.8 Total Dissolved Solids 5/21/2020 TRA 231 231 – 231 1000 ppm No Total dissolved mineral constituents in water. 11/3/2020 Euless 208 208 – 208 Total Hardness [as Calcium carbonate] 5/21/2020 TRA 131 131 – 131 None ppm No Naturally occurring soluble Calcium and Magnesium deposits. 7/17/2019 Euless 7.84 7.84 – 7.84 Radioactive Contaminants Collection Date Highest Level Detected Range of Levels Detected MCLG MCL Units Violation Likely Source of Contamination Combined Radium 226/228 1/22/2015 1.5 1.5 – 1.5 0 5 PCI/L No Erosion of natural deposits. Annual Chlorine Residual Chlorine Residual Year Average Level Range of Levels Detected MRDL MRDLG Units Violation Source in Drinking Water Chlorine Residual 2020 2.2 0.5 - 4.0 4 4 Mg/l No Chlorine is a water additive used to control microbes. Coliform Bacteria MCLG Total Coliform Maximum Contaminant Level Highest No. of Positive Fecal Coliform or E. Coli MCL Total No. of Positive E. Coli or Fecal Coliform Samples Violation Likely Source of Contamination 0 5% of monthly samples are positive. 6.2 0 0 N Naturally present in the environment. Lead and Copper Lead and Copper Date Sampled MCLG The 90th Percentile Action Level Site # Over Action Level Units Violation Likely Source of Contamination Copper 2020 1.3 0.21 1.3 0 ppm No Erosion of natural deposits; Corrosion of household plumbing systems. Lead 2020 0 2 15 0 ppb No Corrosion of plumbing systems; Erosion of natural deposits. Regulated Contaminants Disinfectants and Disinfection By-Products Collection Date Highest Level Detected Range of Levels Detected MCLG MCL Units Violation Likely Source of Contamination Arsenic 7/17/2019 Euless 0.001 0.001 – 0.001 0 0.01 ppb No Erosion of natural deposits; Runoff from orchards; Runoff from glass & electronics production wastes. Antimony (Total) 7/17/2019 Euless .001 .001 - .001 .006 .006 ppb No Naturally occurring element Atrazine 5/21/2020 TRA 0.3 0.3 – 0.3 3 3 ppb No Runoff from herbicide used on row crops. 6/14/2018 Euless 0.1 0.1 – 0.1 Barium 5/21/2020 TRA 0.041 0.041 - 0.041 2 2 ppm No Discharge of drilling wastes; Discharge from metal refineries; Erosion of natural deposits. 7/17/2019 Euless 0.51 0.051 – 0.051 Bromate 2020 TRA 7.92 <5 – 7.92 0 10* ppb No By-product of drinking water disinfection *Compliance based on Running Annual Average of monthly averages for Bromate at the end of each quarter, which was less than 5 ppb for each quarter in 2020. Chromium 7/17/2019 Euless 3.9 3.9 – 3.9 100 100 ppb No Discharge from Steel and Pulp mills 5/21/2020 TRA 1.6 1.6 – 1.6 Cyanide 5/21/2020 TRA 68.2 68.2 – 68.2 200 200 ppb No Discharge from steel/metal factories; Discharge from plastic and fertilizer factories. 11/3/2020 Euless 0.02 0.02 - 0.02 Fluoride 5/21/2020 TRA 0.449 0.449 – 0.449 4 4 ppm No Erosion of natural deposits; Water additive which promotes strong teeth; Discharge from fertilizer & aluminum factories. 11/3/2020 Euless 0.534 0.534 - 0.534 Nitrate (measured as Nitrogen) 5/21/2020 TRA 0.145 0.145 – 0.145 10 10 ppm No Runoff from fertilizer use; Leaching from septic tanks; Sewage; Erosion of natural deposits. 11/3/2020 Euless 1 0.32 – 0.69 Simazine 6/14/2018 Euless 0.06 0.06 – 0.06 4 4 ppb No Herbicide runoff 5/21/2020 TRA 0.060 0.060 – 0.060 Total Organic Carbon Removal ratio* 2020 TRA 1.62 1.02 – 1.62 None TT=1.0 None No Naturally present in the environment. *Removal ratio is the percent TOC removed by the treatment process divided by the percent of TOC removal required by TCEQ. Turbidity highest single measurement 2020 TRA 0.25 0.03 – 0.25 0 TT=1.0 NTU No Soil runoff. Good indicator of water quality & filtration. % of samples ≤ 0.3 NTU 2020 Lowest was 100 100 – 100 100 TT=95 % No Soil runoff. Good indicator of water quality & filtration. Haloacetic Acids (Haa5*) 11/3/20 Euless 17 2.7 - 24 N/A 60 ppb No By-product of drinking water disinfection Total Trihalomethanes 11/3/20 Euless 39 21.5 – 48.5 N/A 80 ppb No By-product of drinking water disinfection Not all sample results may have been used for calculating the Highest Level Detected because some results may be part of an evaluation to determine where compliance sampling should occur in the future. Unregulated Contaminants Contaminant Collection Date Highest Single Sample Range of Levels Detected Units Likely Source of Contamination Bromodichloromethane 9/23/2020 TRA 11.5 11.5 – 11.5 ppb By-product of drinking water chlorination. 7/18/2020 Euless 18.1 18.1 – 18.1 Chloroform 9/23/2020 TRA 11 11 – 11 ppb By-product of drinking water chlorination. 7/28/2020 Euless 22.4 22.4 – 22.4 Dibromochloromethane 9/23/2020 TRA 5.86 5.86 – 5.86 ppb By-product of drinking water chlorination. 7/28/2020 Euless 8.99 8.99 – 8.99 Radionuclides Contaminant Collection Date Highest Single Sample Range of Levels Detected MCLG MCL Units Violation Likely Source of Contamination Beta/photon emitters 5/11/2017 5.2 5.2 – 5.2 0* 50* pCi/L No Decay of natural and man-made deposits. *MCLG and MCL are given in exposure units of millirem/year (set as 0 and 4 respectively), but samples are measured in activity units of picoCuries/Liter (pCi/L). EPA considers 50 pCi/L to be the level of concern for Beta particles. Secondary and Other Constituents Not Regulated Contaminant Collection Date Highest Range of Levels Detected Secondary Limit Units Violation Likely Source of Contamination Acetone 9/23/2020 TRA 9.29 9.29 – 9.29 None ppb No By-product of drinking water chlorination. 11/3/2020 Euless 5.19 5.19 – 5.19 Aluminum 5/21/2020 TRA 36 36 - 36 200 ppb No Abundant naturally occurring element. 7/17/2019 Euless .021 .021 - .021 Bicarbonate [as Calcium carbonate] 5/21/2020 TRA 105 105 – 105 None ppm No Erosion of carbonate rocks such as limestone. Calcium 5/21/2020 TRA 44.8 44.8 – 44.8 None ppm No Abundant naturally occurring element. 11/3/2020 Euless 2.1 2.1 – 2.1 Chloride 5/21/2020 TRA 25.8 25.8 – 25.8 300 ppm No Abundant naturally occurring element. Used in water purification; By-product of oil field activity. 11/3/2020 Euless 24.3 24.3 – 24.3 Conductivity @ 25ºC 5/21/2020 TRA 415 415 – 415 None µmho/cm No Ability of water to conduct electricity due to electrolytes. 11/3/2020 Euless 357 357 – 357 Copper 5/21/2020 TRA 12 12 – 12 1000* ppb No Erosion of natural deposits; Corrosion of household plumbing. 6/16/2020 Euless 96 96 – 96 *This secondary limit is for Copper as a nuisance contaminant, apart from the primary list because it can stain fixtures and impart a bitter metallic taste to drinking water. Magnesium 5/21/2020 TRA 4.71 4.71 - 4.71 None ppm No Abundant naturally occurring element. 7/17/2019 Euless 0.62 0.62 - 0.62 Manganese 5/21/2020 TRA 2.8 2.8 - 2.8 50 ppb No Naturally occurring element. 7/17/2019 Euless 1.2 1.2 - 1.2 Secondary and Other Constituents Not Regulated (Continued) Contaminant Collection Date Highest Range of Levels Detected Secondary Limit Units Violation Likely Source of Contamination Water Conservation To help keep our environment green, all Euless residents should refrain from watering their lawn between the hours of 10 a.m. to 6 p.m. Watering during these times puts a heavy strain on water demands and may counteract healthy lawn growth. For how often to water your lawn, please refer to the chart below and find your grass type. You should also be mindful of your water usage indoors as well, as even little things such as a dripping faucet can add up to an estimated 2 gallons of water per hour. Conserving water not only helps you keep your own cost low, but also helps all of us keep Euless looking good. Type of Grass How often to Water Common Bermuda Every 8 to 10 days Hybrid Bermuda Every 5 to 8 days St. Augustine Every 4 to 5 days Buffalo grass Every 2 to 5 weeks Cease the Grease We all love crispy fries or a juicy steak, but there is always that nasty clean up. Grease and oils are not only gross to look at, but also have a nasty habit of clogging up drains. It may not seem like it, but when grease or oil cools it makes a sludgy material that grows larger and blocks water from moving through the pipeline. To prevent this inconvenience from happening to you, here are a few ways to stop greasy build up. Remove oils and grease with a paper towel from all dishes and pans before washing. Once grease or cooking oil has cooled, pour into a container such as an old food can, let it cool and dispose of it in the trash. Never pour oil or grease directly down the drain. Your garbage disposal does not destroy grease and with the addition of food scraps, may clog your pipes faster. Don’t let grease clog up your pipes and cease the grease! Don’t Feed the Storm Drain Have you ever looked at a storm drain? I mean really looked at it? If you have you may have noticed a few curious things about the water around it. The water is a strange murky color, there’s an empty soda bottle, a slice of bread, last month’s People magazine, a bacteria colony, and you get my point. All these possible contaminants may not seem like that big of a problem, but these may affect the cleanliness of our creeks and the quality of Euless’s water. To combat this, here are some things you can do to stop this from happening. - Never put anything directly in the storm drain (this includes natural items such as leaves or dirt) - Never throw litter in streets or down storm drains - Choose non-toxic chemicals for your lawn and garden - Compost grass clippings and leaves - Sweep, do not wash, fertilizer and soil off driveways and walkways back onto the grass - Never allow pet waste to wash into storm drains - Repair oil leaks from motor vehicles immediately - Do not hose spilled brake fluid, oil, grease, and antifreeze into the street These may seem like common knowledge actions, but small changes can be multiplied by everyone in our community. Remember to feed your family, friends, and pets, but don’t feed the storm drains. Reclaimed Water Reclaimed or “recycled” water is produced from the water we use and discard every day. After proper treatment, it is ideal for many non-drinking purposes such as landscape watering. Reclaimed water is rapidly becoming a valuable resource and is a practical method of relieving the demand on potable water supplies. Every drop of reclaimed water used for outdoor watering represents a drop of potable water saved for drinking. The City of Euless uses reclaimed water from the Village Creek Wastewater Treatment Plant in Fort Worth to irrigate Texas Star Golf Course and the Parks at Texas Star. The entire sports complex is comprised of over 300 acres of land. The City of Euless also provides reclaimed water to 30 commercial and multi-family properties for irrigation. In 2020, they used nearly 100 million gallons of reclaimed water for irrigation instead of potable water. Since it is treated wastewater, it is not subject to drought restrictions and may provide additional nutrients to the turf, which makes good environmental sense. By using reclaimed water, we’re working together to protect our environment now and in the future. It provides an efficient use of the region’s water resources while conserving valuable water supplies.