2017 Annual Drinking Water Quality Report (Consumer Confidence Report)

Transcription

1 2017 Annual Drinking Water Quality Report (Consumer Confidence Report) RANKIN ROAD WEST MUNICIPAL UTILITY DISTRICT PWS ID No. TX Phone No: WATER SOURCES: The sources (both tap water and bottled water) include rivers, lakes, streams, ponds, reservoirs, springs, and wells. As water travels over the surface the land or through the ground, it dissolves ly-occurring minerals, and in some cases, radioactive material, and can pick up substances resulting from the presence contaminants that may be present in source water: - Microbial contaminants, such as viruses and bacteria, which come from sewage treatment plants, septic systems, agricultural livestock operations, and - contaminants, such as salts and metals, which can be ly-occurring or result from urban storm water runf, industrial or domestic wastewater discharges, oil and gas production, mining, or farming. - Pesticides and herbicides, which may come from a variety sources such as agriculture, urban storm water runf, and residential uses. - Organic chemical contaminants, including synthetic and volatile organic chemicals, which are by-products industrial processes and petroleum production, and can also come from gas stations, urban storm water runf, and septic systems. - Radioactive contaminants, which can be ly-occurring or be the result oil and gas production and mining activities. In order to ensure that tap water is safe to drink, EPA prescribes regulations which limit the amount 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. may be found in that may cause taste, color, or odor problems. These types problems are not necessarily causes for health concerns. For more information on taste, odor, or color drinking water, please contact the system s business fice. You may be more vulnerable than the general population to certain microbial contaminants, such as Cryptosporidium, in. 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 from your physician or health care providers. Additional guidelines on appropriate means to lessen the risk infections by Cryptosporidium are available from the Safe Drinking Water Hotline ( ). If present, elevated levels lead can cause serious health problems, especially for pregnant women and young children. Lead in is primarily from materials and components associated with service lines and home. We are responsible for providing high quality, but we cannot control the variety materials used in 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, testing methods, and steps you can take to minimize exposure is available from the Safe Drinking Water Hotline or at In the Water Loss Audit submitted to the Texas Water Development Board time period January December 2017, our system lost an estimated 339,713 gallons water. Overall, our system accounted for approximately % the water produced during that period. If you have any questions about the water loss audit, please call : Time: Public Participation Opportunities 3rd Tuesday Each Month 12:00 PM Location: Bammel N. Houston Houston, TX Phone No: To learn about future public meetings (concerning your ), or to request to schedule one, please call us. En Español Este informe incluye informacion importante sobre el agua potable. Si tiene preguntas o comentarios sobre este informe en español, favor de llamar al tel. (281) para hablar con una persona bilingüe en español. The TCEQ has completed a Source Water Assessment for all systems that own their sources. The report describes the susceptibility and types constituents that may come in contact with your source based on human activities and conditions. The system(s) from which we purchase our water received the assessment report. For more information on source water assessments

2 and protection efforts at our system, contact the system s business fice. Information about Source Water Assessments A Source Water Assessment for your source(s) is currently being conducted by the TCEQ and should be provided to us this year. The report describes the susceptibility and the types constituents that may come into contact with your source based on human activities and conditions. The information in this assessment will allow us to focus our source water protection strategies. For more information about your sources water, please refer to the Source Water Assessment Viewer available at the following URL: Further details about sources and source water assessments are available in Drinking Water Watch at the following URL: Secondary Constituents Many constituents (such as calcium, sodium, or iron) which are ten found in can cause taste, color, and odor problems. The taste and odor constituents are called secondary constituents and are regulated by the State 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 your water. About The Following Pages The pages that follow list all federally regulated or monitored contaminants, which have been found in your. The U.S. EPA requires water systems to test for up to 97 contaminants. Water Quality Test Results Maximum Contaminant Goal or MCLG: Maximum Contaminant or MCL: The level on contaminant in below which there is no known or expected risk to health. MCLGs allow for a margin safety. The highest level contaminant that is allowed in. MCLs are set as close to the MCLGs as feasible using the best available treatment technology. Maximum residual disinfectant level goal or MRDLG: The level a disinfectant below which there is no known or expected risk to health. MRDLGs do not reflect the benefits the use disinfectants to control microbial contaminants. Maximum residual disinfectant level or MRDL: Avg: ppm: ppb: na: TCR: MFL NTU pci/l ppt: ppq: The highest level a disinfectant allowed in. There is convincing evidence that addition a disinfectant is necessary for control microbial contaminants. Regulatory compliance with some MCLs are based on running annual average monthly samples. Milligrams per liter or parts per million or one ounce in 7,350 gallons water. Micrograms per liter or parts per billion or one ounce in 7,350 gallons water. Not applicable. The following tables contain scientific terms and measures, some which may require explanation. coliform rule Million fibers per liter (a measure asbestos) Nephelometric turbidity units (a measure turbidity) picocuries per liter (a measure radioactivity) parts per trillion, or nanograms per liter (ng/l) parts per quadrillion, or pictograms per liter (pg/l) Action Goal (ALG): The level contaminant in below which there is no known or expected risk to health. ALGs allow for a margin safety. Action : The concentration a contaminant which; if exceeded, triggers treatment or other requirements which a water system must follow. Sampled MCLG Action 90 th Percentile # Sites Over AL ppm N Units Violation Likely Source Erosion deposits; Leaching from wood preservatives; Corrosion

3 Lead ppb N Corrosion systems; erosion Disinfectants and Disinfection By-Products Haloacetic Acids (HAA5)* Range s No goal for No goal for MCLG MCL Units Violation Likely Source 60 ppb N 80 ppb N By-product By-product (Measured as Range s MCLG MCL Units Violation Likely Source ppm N ppm N Runf from deposits Runf from deposits Action Goal (ALG): The level contaminant in below which there is no known or expected risk to health. ALGs allow for a margin safety. Action : The concentration a contaminant which, if exceeded, triggers treatment or other requirements which a water system must follow. Sampled MCLG Action 90 th Percentile # Sites AL Units Violation 7/16/ ppm No Likely Source Erosion deposits; wood preservatives; corrosion systems. Disinfectants and Disinfection By-Products Haloacetic Acids (HAA5)* Range s MCLG MCL Units Violation Likely Source No goal No goal 60 ppb N 80 ppb N By-product disinfection By-product disinfection Range s MCLG MCL Units Violation Likely Source

4 Arsenic While you are drinking water meets EPA standards for arsenic, it does not contain low levels arsenic. EPA s standard balances the current understanding arsenics possible health effects against the costs removing arsenic from. EPA continues to research the health effects low levels arsenic, which is a mineral known to cause cancer in humans at high concentrations and is linked to other health effects such as skin damage and circulatory problems ppb No Erosion deposits; Runf from orchards; Runf from glass and electronics production wastes. Barium ppm No Cyanide 7/24/ ppb No Fluoride ppm No ppm No ppm No Discharge drilling wastes; discharge from metal refineries; erosion Discharge from plastic and fertilizer factories; Discharge from steel/metal factories. Erosion deposits; water additive which promotes strong teeth; discharge from fertilizer and aluminum factories. Runf from Runf from Leaching from sewage; Erosion Radioactive Combined Radium 226/228 Range s MCLG MCL Units Violation Likely Source 3/4/ pci/l N0 Erosion Disinfectant Residuals Disinfectant Residuals Year Average Range s MRDL MRDLG Units Violation Likely Source Chloramine ppm Water additive used to control microbes. *** In 2017, Rankin Road West Municipal Utility District purchased water through an open interconnect from Central Harris County Regional Water Authority. The following tables contain all the chemical contaminants which have been found in their water.

5 Action Goal (ALG): The level contaminant in below which there is no known or expected risk to health. ALGs allow for a margin safety. Action : The concentration a contaminant which; if exceeded, triggers treatment or other requirements which a water system must follow. Sampled MCLG Action 90 th Percentile # Sites Over AL 7/16/ ppm N Units Violation Likely Source Erosion deposits; Leaching from wood preservatives; Corrosion systems. Disinfectants and Disinfection By-Products Haloacetic Acids (HAA5) Range s No goal MCLG MCL Units Violation Likely Source 60 ppb N By-product * The value in the or Average column is the highest average all HAA5 sample results collected at a location over a year No goal 80 ppb N By-product The value in the or Average column is the highest average all TTHM sample results collected at a location over a year. Range s MCLG MCL Units Violation Likely Source Arsenic ppb N Erosion deposits; Runf from orchards; Runf from glass and electronics production waste. Barium Ppm N Discharge drilling wastes; Discharge from metal refineries; Erosion Cyanide 7/24/ Ppb N Discharge from plastic and fertilizer factories; Discharge from steel/metal factories ppm N 8/12/ ppm No Runf from Runf from Radioactive Combined Radium 226/228 Range s MCLG MCL Units Violation 3/4/ pci/l N Likely Source Erosion ** In 2017, Rankin Road West UD received water through Harris County MUD 200 Cranbrook, which purchases water from Central Harris County Regional Water Authority, Harris County MUD 205 and Harris County MUD 399. The following tables contain all the chemical contaminants which have been found in their water.

6 Sampled MCLG Action 90 th Percentile # Sites Over AL ppm N Units Violation Likely Source Erosion deposits; Leaching from wood preservatives; Corrosion systems. Lead ppb N Corrosion systems; Erosion Disinfection By- Products Range s MCLG MCL Units Violation Likely Source Haloacetic Acids (HAA5)* No goal for 60 ppb N * The value in the or Average column is the highest average all HAA5 sample results collected at a location over a year No goal for 80 ppb N The value in the or Average column is the highest average all TTHM sample results collected at a location over a year. By-product By-product Range s MCLG MCL Units Violation Likely Source Arsenic Ppb `N Erosion deposits; Runf from orchards; Runf from glass and electronics production wastes. While your meets EPA standards for arsenic, it does contain low levels arsenic. EPAs standard balances the current understanding arsenics possible health effects against the costs removing arsenic from. EPA continues to research the health effects low levels arsenic, which is a mineral known to cause cancer in humans at high concentrations and is linked to other health effects such as skin damage and circulatory problems. Barium 2/11/ Ppm N Dischrge drilling wastes; Discharge from metal refineries; Erosion Cyanide Ppb N Discharge from plastic and fertilizer factories; Discharge from steel/metal factories ppm N Runf from

7 (Measured as 1/22/ ppm N deposits Runf from deposits Radioactive Combined Radium 226/228 Range s MCLG MCL Units Violation Likely Source 3/4/ pci/l N Erosion Synthetic organic contaminants including pesticides and herbicides Atrazine Range s MCLG MCL Units Violation ppb N Likely Source Runf from herbicide used on row crops.