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HomeMy WebLinkAbout2020 Water Quality Report2020 Annual Water Quality Report Consumer Confidence Report (817) 685-1581 | www.EulessTx.gov/Water 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. Our Drinking Water Meets or Exceeds All Federal (EPA) Drinking Water Requirements This report is intended to provide you with important information about your drinking water and the efforts made by the water system to provide safe drinking water. The City of Euless is a member of the American Water Works Association. Public Participation Opportunities: We encourage public interest and participation in our community’s decisions affecting drinking water. Regular City Council meetings take place on the second & fourth Tuesdays of the month, at 7 p.m. in Euless City Hall, 201 N. Ector Dr. The public is welcome. (817) 685-1400. Water Sources: The sources of drinking water (both tap water and bottled water) include rivers, lakes, streams, ponds, reservoirs, springs, and wells. As water travels over the surface of the land or through the ground, it dissolves naturally-occurring minerals and, in some cases, radioactive material, and can pickup substances resulting from the presence of animals or from human activity. Drinking water, including bottled water, may reasonably be expected to contain at least small amounts of some contaminants. The presence of contaminants 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 at (800) 426-4791. Contaminants that may be present in source water include: • Microbial contaminants, such as viruses and bacteria, which may come from sewage treatment plants, septic systems, agricultural livestock operations, and wildlife. • Inorganic contaminants, such as salts and metals, can be naturally- occurring or result from urban storm water runoff, industrial or domestic wastewater discharges, oil & gas production, mining, or farming. • Pesticides and herbicides, which may come from a variety of sources such as agriculture, urban storm water runoff, and residential uses. • Organic chemical contaminants, including synthetic and volatile organic chemicals, which are by-products of industrial processes and petroleum production, and can also come from gas stations, urban storm water runoff, and septic systems. In order to ensure that tap water is safe to drink, EPA prescribes regulations which limit the amount of certain contaminants in water provided by public water systems. FDA regulations establish limits for contaminants in bottled water which must provide the same protection for public health. Contaminants may be found in drinking water that may cause taste, color, or odor problems. These types of problems are not necessarily causes for health concerns. For more information on taste, odor, or color of drinking water, please contact the system's business office. 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 lessen the risk of infection by Cryptosporidium are available from the Safe Drinking Water Hotline. Required Additional Health Information for Lead If present, elevated levels of lead can cause 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 home plumbing. We are responsible for providing high quality drinking water, but we cannot control the variety of materials used in plumbing components. When your water has been sitting for several hours, you can minimize the potential for lead exposure by flushing your tap for 30 seconds to 2 minutes before using water for drinking or cooking. If you are concerned about lead in your water, you may wish 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 or at www.epa.gov/safewater/lead. Where do we get our Drinking Water? Our drinking water is obtained from surface and ground water sources. It is supplied by Trinity River Authority (Cedar Creek and Richland Chambers Lakes) and Euless water wells (Trinity Aquifer). A Source Water Susceptibility Assessment for your drinking water source(s) is currently being updated by the Texas Commission on Environmental Quality. This information describes the susceptibility and types of constituents that may come into contact with your drinking water source based on human activities and natural conditions. The information contained in the assessment allows us to focus source water protection strategies. For more information about your sources of water, please refer to the Source Water Assessment Viewer available at the following URL: http://www.tceq.texas.gov/gis/swaview. Further details about sources and source-water assessments are available at http://dww2.tceq.texas.gov/DWW/. 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. 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. 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 Abbreviations and Definitions: The following tables contain scientific terms and measures, some of which may require explanation. Action Level (AL): The concentration of a contaminant which, if exceeded, triggers treatment or other requirements a water system must follow. Conductivity: Measures the water’s ability to conduct electricity, which provides a measure of what is dissolved in water. A higher conductivity value indicates that there are more 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) violation has occurred and/or why total coliform bacteria were found on multiple occasions. Maximum Contaminant Level Goal or (MCLG): The level of a contaminant in drinking water below which there is no known or expected health risk. MCLGs allow for a margin of safety. Maximum Contaminant Level or (MCL): The highest level of a contaminant that is allowed in drinking water. MCLs are set as close to the MCLGs 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 contamination. Maximum Residual Disinfectant Level (MRDL): The highest level of 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: Piccocuries Per Liter, a measure of radioactivity ppm: Parts Per Million or Milligrams Per Liter – or one ounce in 7,350 gallons of water ppb: Parts Per Billion or Micrograms Per Liter – or one ounce in 7,350,000 gallons of water. 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. Umhos/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. 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.