Loading...
2010 Water Quality Report2010 Annual Drinking Water Quality Report (Consumer Confidence Report) CITY OF SCHERTZ 0940003 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 immuno-compromised persons such as those undergoing chemotherapy for cancer; those 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 provider. Additional guidelines on appropriate means to lessen the risk of infection by Cryptosporidium are available from the Safe Drinking Water Hotline at (800) 426-4791. En Español Este informe incluye información importante sobre el agua potable. Si tiene preguntas o comentarios sobre éste informe en español, favor de llamar al tel. (210)619-1110 - para hablar con una persona bilingüe en español. Public Participation Opportunities Date: Monday - Friday Time: 8:00 am to 5:00 pm Location: 10 Commercial p. Bldg #2 Phone Number: 210-619-1800 Our Drinking Water Meets or Exceeds All Federal (EPA) Drinking Water Requirements This report is a summary of the quality of the water we provide our customers. The analysis was made by using the data from the most recent U.S. Environmental Protection Agency (EPA) required tests and is presented in the attached pages. We hope this information helps you become more knowledgeable about what's in your drinking water. Phone Number:210-619-1800 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 pick up substances resulting from the presence of animals or from human activity. Contaminants that may be present in source water before treatment include: microbes, inorganic contaminants, pesticides, herbicides, radioactive contaminants, and organic chemical contaminants. To learn about future public meetings (concerning your drinking water), or to request to schedule one, please call us. Required language for ALL community public water supplies: Page 1 of 5 2010 Annual Drinking Water Quality Report ALL drinking water may contain contaminants. When drinking water meets federal standards there may not be any health based benefits to purchasing bottled water or point of use devices. 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 EPA’s Safe Drinking Water Hotline (1-800-426-4791). About The Following Pages The pages that follow list all of the federally regulated or monitored contaminants which have been found in your drinking water. The U.S. EPA requires water systems to test for up to 97 contaminants. DEFINITION Secondary Constituents Many constituents (such as calcium, sodium, or iron) which are often found in drinking water, can cause taste, color, and odor problems. The taste and odor constituents are called secondary constituents and are regulated by the State of Texas, not the EPA. These constituents are not causes for health concern. Therefore, secondaries are not required to be reported in this document but they may greatly affect the appearance and taste of your water. Maximum Contaminant Level (MCL) The highest permissible level of a contaminant in drinking water. MCLs are set as close to the MCLGs as feasible using the best available treatment technology. Maximum Contaminant Level Goal (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. Treatment Technique (TT) A required process intended to reduce the level of a contaminant in drinking water. Action Level (AL) The concentration of a contaminant which, if exceeded, triggers treatment or other requirements which a water system must follow. NTU - MFL - pCi/L - ppm - ppb - ppt - ppq - Nephelometric Turbidity Units million fibers per liter (a measure of asbestos) picocuries per liter (a measure of radioactivity) parts per million, or milligrams per liter (mg/L) parts per billion, or micrograms per liter (µg/L) parts per trillion, or nanograms per liter parts per quadrillion, or picograms per liter Our drinking water is purchased from SSLGC GROUND water sources. It comes from the Lake/River/Reservoir/Aquifer: CARRIZO- WILCOX. A Source Water Susceptibility Assessment for your drinking water sources(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 our source water protection strategies. Some of this source water assessment information will be available later this year on Texas Drinking Water Watch at http://dww.tceq.state.tx.us/DWW/ . For more information on source water assessments and protection efforts at our system, please contact us. Abbreviations 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. 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. Where do we get our drinking water? 0940003 Page 2 of 5 2010 Annual Drinking Water Quality Report Inorganic Contaminants Year or Range Contaminant Average Level Minimum Level MCL MCLG Unit of Measure Source of Contaminant Maximum Level Barium 0.092 0.092 ppm Discharge of drilling wastes; discharge from metal refineries; erosion of natural deposits. 0.092 2 2 2006 Fluoride 0.1 0.1 ppm Erosion of natural deposits; water additive which promotes strong teeth; discharge from fertilizer and aluminum factories. 0.1 4 4 2006 Nitrate 0.01 0.01 ppm Runoff from fertilizer use; leaching from septic tanks, sewage; erosion of natural deposits. 0.01 10 10 2009 Combined Radium 226 & 228 2.3 2.3 pCi/L Erosion of natural deposits. 2.3 15 0 2006 Gross beta emitters 10 10 mrem/ yr Decay of natural and man-made deposits. 10 4 0 2006 Organic Contaminants TESTING WAIVED, NOT REPORTED, OR NONE DETECTED Maximum Residual Disinfectant Level Disinfection Byproducts Systems must complete and submit disinfection data on the Disinfection Level Quarterly Operating Report (DLQOR). On the CCR report, the system must provide disinfectant type, minimum, maximum and average levels. WAIVED OR NOT YET SAMPLED “This evaluation is sampling required by EPA to determine the range of total trihalomethane and haloacetic acids in the system for future regulations. The samples are not used for compliance, and have been collected under non-standard conditions. EPA requires the data to be reported here. Please contact your water representative if you have any questions” Unregulated Initial Distribution System Evaluation for Disinfection Byproducts: WAIVED OR NOT YET SAMPLED Contaminant Average Level Minimum Level MCL Unit of Measure Source of Contaminant Maximum Level Year 60 2010 Total Haloacetic Acids 1.1 0 ppb Byproduct of drinking water disinfection. 2.5 80 2010 Total Trihalomethanes 8.3 4.8 ppb Byproduct of drinking water disinfection. 12.7 Year Disinfectant Average Level Minimum Level Unit of Measure Source of Chemical Maximum Level MRDL MRDLG 2009 ppm Disinfectant used to control microbes. 4.0 <4.0 Chlorine 1.8 1.1 2.8 0940003 Page 3 of 5 2010 Annual Drinking Water Quality Report Unregulated Contaminants Contaminant Average Level Minimum Level Unit of Measure Source of Contaminant Maximum Level Year or Range Bromoform, chloroform, dichlorobromomethane, and dibromochloromethane are disinfection byproducts. There is no maximum contaminant level for these chemicals at the entry point to distribution. Dibromochloromethane 1.3 1.3 ppb Byproduct of drinking water disinfection. 1.3 2007 Unregulated contaminants are those for which EPA has not established drinking water standards. The purpose of unregulated contaminant monitoring is to assist EPA in determining the occurrence of unregulated contaminants in drinking water and whether future regulation is warranted. Any unregulated contaminants detected are reported in the following table. For additional information and data visit http://www.epa.gov/safewater/ucmr/ucmr2/index.html, or call the Safe Drinking Water Hotline at (800)426-4791. Unregulated Contaminant Monitoring Rule 2 (UCMR2) Lead and Copper Required Additional Health Information for Lead Contaminant The 90th Percentile Number of Sites Exceeding Action Level Action Level Unit of Measure Source of Contaminant Year 2007 Lead 1.6 0 15 ppb Corrosion of household plumbing systems; erosion of natural deposits. 2007 Copper 0.041 0 1.3 ppm Corrosion of household plumbing systems; erosion of natural deposits; leaching from wood preservatives. "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. This water supply is responsible for providing high quality drinking water, but 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 http://www.epa.gov/safewater/lead." NOT REQUIRED Turbidity Fecal Coliform REPORTED MONTHLY TESTS FOUND NO FECAL COLIFORM BACTERIA. Total Coliform REPORTED MONTHLY TESTS FOUND NO COLIFORM BACTERIA. 0940003 Page 4 of 5 2010 Annual Drinking Water Quality Report Secondary and Other Constituents Not Regulated (No associated adverse health effects) Constituent Average Level Minimum Level Secondary Limit Unit of Measure Source of Constituent Maximum Level Year or Range 2007 Bicarbonate 61 61 NA ppm Corrosion of carbonate rocks such as limestone. 61 2007 Calcium 13.9 13.9 NA ppm Abundant naturally occurring element. 13.9 2007 Chloride 20 20 300 ppm Abundant naturally occurring element; used in water purification; byproduct of oil field activity 20 2007 Copper 0.1 0.1 1 ppm Corrosion of household plumbing systems; erosion of natural deposits; leaching from wood preservatives. 0.1 2007 Hardness as Ca/Mg 47 47 NA ppm Naturally occurring calcium and magnesium. 47 2007 Magnesium 3 3 NA ppm Abundant naturally occurring element. 3 2007 Manganese 0.0013 0.0013 .05 ppm Abundant naturally occurring element. 0.0013 2007 Nickel 0.002 0.002 NA ppm Erosion of natural deposits. 0.002 2007 pH 7.4 7.4 >7.0 units Measure of corrosivity of water. 7.4 2007 Sodium 32 32 NA ppm Erosion of natural deposits; byproduct of oil field activity. 32 2007 Sulfate 21 21 300 ppm Naturally occurring; common industrial byproduct; byproduct of oil field activity. 21 2007 Total Alkalinity as CaCO3 61 61 NA ppm Naturally occurring soluble mineral salts. 61 2007 Total Dissolved Solids 151 151 1000 ppm Total dissolved mineral constituents in water. 151 2007 Zinc 0.032 0.032 5 ppm Moderately abundant naturally occurring element; used in the metal industry. 0.032 0940003 Page 5 of 5 2010 Annual Drinking Water Quality Report Violations Table Chlorine Some people who use water containing chlorine well in excess of the MRDL could experience irritating effects to their eyes and nose. Some people who drink water containing chlorine well in excess of the MRDL could experience stomach discomfort. Violation Type Violation Begin Violation End Violation Explanation MONITORING, ROUTINE (DBP), 07/01/2010 09/30/2010 We failed to test our drinking water for the MAJOR contaminant and period indicated. Because of this failure, we cannot be sure of the quality of our drinking water during the period indicated. Steps to Correct Violations These tests were performed during this period and sent to TCEQ. No violation was received by the City. The City has re-submitted these reports to TCEQ and is available for review by the public.