ANNUAL QUALITY REPORT WATER TESTING PERFORMED IN Presented By City of Safety Harbor PWS ID#:

Transcription

1 ANNUAL WATER QUALITY REPORT WATER TESTING PERFORMED IN 2014 Presented By City of Safety Harbor PWS ID#:

2 Our Mission Continues We are proud to present once again our annual water quality report covering all testing performed between January 1 and December 31, Most notably, last year marked the 40th anniversary of the Safe Drinking Water Act (SDWA). This rule was created to protect public health by regulating the nation s drinking water supply. We celebrate this milestone as we continue to manage our water system with a mission to deliver the best quality drinking water. By striving to meet the requirements of SDWA, we are ensuring a future of healthy, clean drinking water for years to come. Please let us know if you ever have any questions or concerns about your water. Community Participation Y ou are invited to participate in our City Commission Meetings and voice your concerns about your drinking water. Meetings are the first and third Mondays of each month beginning at 7:30 pm at Safety Harbor City Hall, 750 Main Street, Safety Harbor, FL. Important Health Information Some people may be more vulnerable to contaminants in drinking water than the general population. Immunocompromised persons such as persons with cancer undergoing chemotherapy, persons who have undergone organ transplants, people with HIV/AIDS or other immune system disorders, some elderly, and infants may be particularly at risk from infections. These people should seek advice about drinking water from their health care providers. The U.S. EPA/CDC (Centers for Disease Control and Prevention) guidelines on appropriate means to lessen the risk of infection by Cryptosporidium and other microbial contaminants are available from the Safe Drinking Water Hotline at (800) or water.epa.gov/drink/hotline. Substances That Could Be in Water 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 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, which can be naturally-occurring or result from urban stormwater runoff, industrial or domestic wastewater discharges, oil and gas production, mining, or farming. Pesticides and Herbicides, which may come from a variety of sources such as agriculture, urban stormwater 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 stormwater runoff, and septic systems. Radioactive Contaminants, which can be naturally occurring or be the result of oil and gas production and mining activities. In order to ensure that tap water is safe to drink, the U.S. EPA prescribes regulations, which limit the amount of certain contaminants in water provided by public water systems. The Food and Drug Administration (FDA) regulations establish limits for contaminants in bottled water, which must provide the same protection for public health. 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 the water poses a health risk. More information about contaminants and potential health effects can be obtained by calling the Environmental Protection Agency s Safe Drinking Water Hotline at (800)

3 Lead in Home Plumbing 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 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 Our Water Source The City of Safety Harbor purchases all of its water from the Water System, which receives potable (drinking) water from sources managed by the regional water supplier, Tampa Bay Water (TBW). This regional water supply is a blend composed of groundwater, treated surface water, and desalinated seawater. Eleven regional well fields pumping water from the Floridan Aquifer are the primary sources for the regional groundwater supply. The Alafia River, Hillsborough River, C. W. Bill Young Regional Reservoir, and the Tampa Bypass Canal are the primary sources for the regional treated surface water supply. Hillsborough Bay is the primary source of seawater for the regional desalinated supply. From blends of these water sources as well as the Eldridge-Wilde Well field, potable water is transferred to pumping stations where it undergoes additional minor processes before being pumped to homes and businesses through Safety Harbor s distribution system. The blended water provided by is treated with a polyphosphate inhibitor to control corrosion. The groundwater acquired from the Eldridge-Wilde Well field undergoes water quality enhancements comprising five steps. First, the water goes through a hydrogen sulfide removal process. Hydrogen sulfide is a natural element that has a displeasing odor. A polyphosphate inhibitor is then added to control corrosion in the distribution system and home plumbing. Next, the groundwater is treated to a standard of 99.99% effectiveness by adding the chlorine disinfectant to ensure against bacteria growth. Then the chloramine disinfectant is added for residual maintenance. Last, the ph (acid-alkali) is adjusted and stabilized using sodium hydroxide. Source Water Assessment In 2014 the Department of Environmental Protection performed a Source Water Assessment for Tampa Bay Water (TBW). The assessment results are available on the FDEP Source Water Assessment and Protection Program Web site at Between 2004 and 2014, the Department of Environmental Protection performed a Source Water Assessment for. The assessment was conducted to provide information about any potential sources of contamination in the vicinity of the TBW surface water intakes. The surface water system is considered to be at high risk because of the many potential sources of contamination present in the assessment area. The assessment results are available on the FDEP Source Water Assessment and Protection Program Web site at or they can be obtained from, 2575 Enterprise Road, Clearwater, FL 33763; phone (727) National Primary Drinking Water Regulation Compliance This report was prepared by the City of Safety Harbor Public Works Department. If additional information is required, please contact the Public Works Director at (727) For additional information about the City of Safety Harbor, please visit our Web site: www. cityofsafetyharbor.com. QUESTIONS? For more information about this report, or for any questions relating to your drinking water, please contact the Safety Harbor Public Works Director at (727)

4 Sampling Results During the past year we have taken hundreds of water samples in order to determine the presence of any radioactive, biological, inorganic, volatile organic or synthetic organic contaminants. The table below shows only those contaminants that were detected in the water. The state requires us to monitor for certain substances less than once per year because the concentrations of these substances do not change frequently. In these cases, the most recent sample data are included, along with the year in which the sample was taken. We participated in the 3rd stage of the EPA s Unregulated Contaminant Monitoring Regulation (UCMR3) program by performing additional tests on our drinking water. UCMR3 benefits the environment and public health by providing the EPA with data on the occurrence of contaminants suspected to be in drinking water, in order to determine if EPA needs to introduce new regulatory standards to improve drinking water quality. PRIMARY REGULATED S Microbiological Contaminants AND UNIT OF Total Coliform Bacteria (% positive samples) Fecal coliform and E.coli [in the distribution system] 1 (# positive samples) MCL PERCENTAGE PERCENTAGE MCLG MCL LIKELY SOURCE OF CONTAMINATION No 1/14 12/14 1.6% NA NA 0 Presence of coliform bacteria in 5% or more of monthly samples TOTAL NUMBER OF POSITIVE SAMPLES FOR THE YEAR Naturally present in the environment TOTAL NUMBER OF POSITIVE SAMPLES FOR THE YEAR MCLG MCL LIKELY SOURCE OF CONTAMINATION No 1/14 12/14 1 NA NA 0 0 Human and animal fecal waste THE HIGHEST SINGLE THE LOWEST MONTHLY PERCENTAGE OF SAMPLES MEETING REGULATORY LIMITS THE HIGHEST SINGLE THE LOWEST MONTHLY PERCENTAGE OF SAMPLES MEETING REGULATORY LIMITS MCLG MCL Turbidity (NTU) No NA NA NA 1/14 6/14, 12/ NA TT Soil runoff LIKELY SOURCE OF CONTAMINATION

5 Radioactive Contaminants AND UNIT OF Alpha Emitters (pci/l) Radium [Combined Radium] 2 (pci/l) MCLG MCL LIKELY SOURCE OF CONTAMINATION No 3/ ND NA NA NA 0 15 Erosion of natural deposits No NA NA NA 4/ NA 0 5 Erosion of natural deposits Uranium 2 (ppb) No NA NA NA 4/ NA 0 30 Erosion of natural deposits Inorganic Contaminants Antimony (ppb) No NA NA NA 4/ NA 6 6 Discharge from petroleum refineries; fire retardants; ceramics; electronics; solder Arsenic (ppb) No 3/ NA NA NA 0 10 Erosion of natural deposits; runoff from orchards; runoff from glass and electronics production wastes Barium (ppm) No 3/ NA NA NA 2 2 Discharge of drilling wastes; discharge from metal refineries; erosion of natural deposits Chromium (ppb) No 3/ NA NA NA Discharge from steel and pulp mills; erosion of natural deposits Cyanide (ppb) No 3/14 33 ND 33 NA NA NA Discharge from steel/metal factories; discharge from plastic and fertilizer factories Fluoride (ppm) No 3/ NA NA NA Erosion of natural deposits; discharge from fertilizer and aluminum factories; water additive that promotes strong teeth when at optimum levels between 0.7 and 1.3 ppm Lead [point of entry] (ppb) No NA NA NA 1/14, 4/14, 7/14, 10/14 2 ND Residue from man-made pollution such as auto emissions and paint; lead pipe, casing, and solder Nickel (ppb) No 3/ NA NA NA NA 100 Pollution from mining and refining operations; natural occurrence in soil Nitrate [as Nitrogen] (ppm) No 3/ NA NA NA Runoff from fertilizer use; leaching from septic tanks, sewage; erosion of natural deposits Selenium (ppb) No 3/14 1 ND 1 NA NA NA Discharge from petroleum and metal refineries; erosion of natural deposits; discharge from mines Sodium (ppm) No 3/ NA NA NA NA 160 Salt water intrusion, leaching from soil Thallium (ppb) No NA NA NA 8/ NA Leaching from ore-processing sites; discharge from electronics, glass, and drug factories Synthetic Organic Contaminants including Pesticides and Herbicides Dalapon (ppb) No 3/14, 6/14, 8/14, 10/ ND 1.8 NA NA NA Runoff from herbicide used on rights of way

6 Stage 1 Disinfectants and Disinfection By-Products MCLG OR [MRDLG] MCL OR [MRDL] LIKELY SOURCE OF CONTAMINATION Bromate (ppb) No NA NA NA 1/14 12/ ND By-product of drinking water disinfection Chlorine (ppm) No 1/14 12/ NA NA NA [4] [4.0] Water additive used to control microbes Haloacetic Acids (five) [HAA5] (ppb) Chlorine Dioxide (ppb) Chlorite (ppm) Total Organic Carbon 4 (ppm) ACUTE S MCL No 1/14, 5/14, 8/14, 11/ NA NA NA NA 60 By-product of drinking water disinfection NON-ACUTE S NON-ACUTE S MRDLG MRDL (AT THE ENTRANCE TO THE DISTRIBUTION SYSTEM) LIKELY SOURCE OF CONTAMINATION No NA NA NA 1/14 6/14, 12/14 NA Water additive used to control microbes AVERAGE (THREE SAMPLE SET COLLECTED IN THE DISTRIBUTION SYSTEM) HIGHEST AVERAGE (THREE SAMPLE SET) FOLLOWING A DAILY AT THE ENTRANCE TO THE DISTRIBUTION SYSTEM AVERAGE (THREE SAMPLE SET COLLECTED IN THE DISTRIBUTION SYSTEM) HIGHEST AVERAGE (THREE SAMPLE SET) FOLLOWING A DAILY AT THE ENTRANCE TO THE DISTRIBUTION SYSTEM MCLG MCL LIKELY SOURCE OF CONTAMINATION No NA NA NA 1/14 12/ NA By-product of drinking water disinfection TT (MO/YR) Stage 2 Disinfectants and Disinfection By-Products ANNUAL AVERAGE MONTHLY REMOVAL RATIO OR LOWEST ANNUAL AVERAGE MONTHLY REMOVAL RATIO MONTHLY REMOVAL RATIOS (MO/YR) ANNUAL AVERAGE MONTHLY REMOVAL RATIO OR LOWEST ANNUAL AVERAGE MONTHLY REMOVAL RATIO MONTHLY REMOVAL RATIOS MCLG MCL LIKELY SOURCE OF CONTAMINATION No NA NA NA 1/14 6/14, 12/ NA TT Naturally present in the environment MCL Haloacetic Acids (five) [HAA5] Stage 2 (ppb) No 2/14, 5/14, 8/14, 12/14 TTHM [Total trihalomethanes] Stage 2 (ppb) No 2/14, 5/14, 8/14, 12/14 Lead and Copper (Tap water samples were collected from sites throughout the community) AND UNIT OF Copper [tap water] (ppm) AL EXCEEDANCE City of Safety Harbor 90TH PERCENTILE RESULT City of Safety Harbor NO. OF SITES EXCEEDING THE AL MCLG MCL LIKELY SOURCE OF CONTAMINATION NA NA NA NA 60 By-product of drinking water disinfection /14, 5/14, 8/14, 11/14 90TH PERCENTILE RESULT NO. OF SITES EXCEEDING THE AL NA 80 By-product of drinking water disinfection MCLG AL (ACTION ) LIKELY SOURCE OF CONTAMINATION No 8/ /14, 7/ Corrosion of household plumbing systems; erosion of natural deposits; leaching from wood preservatives Lead [tap water] (ppb) No 8/ /14, 7/ Corrosion of household plumbing systems, erosion of natural deposits

7 Definitions AL (Action Level): The concentration of a contaminant which, if exceeded, triggers treatment or other requirements which a water system must follow. IDSE (Initial Distribution System Evaluation): An important part of the Stage 2 Disinfection Byproducts Rule (DBPR). The IDSE is a one-time study conducted by water systems to identify distribution system locations with high concentrations of trihalomethanes (THMs) and haloacetic acids (HAAs). Water systems will use results from the IDSE, in conjunction with their Stage 1 DBPR compliance monitoring data, to select compliance monitoring locations for the Stage 2 DBPR. LRAA (Locational Running Annual Average): The average of sample analytical results for samples taken at a particular monitoring location during the previous four calendar quarters. MCL (Maximum Contaminant Level): 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. MCLG (Maximum Contaminant Level Goal): The level of a contaminant in drinking water below which there is no known or expected risk to health. MCLGs allow for a margin of safety. MRDL (Maximum Residual Disinfectant Level): 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. MRDLG (Maximum Residual Disinfectant Level Goal): 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. NA: Not applicable ND (Not detected): Indicates that the substance was not found by laboratory analysis. NTU (Nephelometric Turbidity Units): Measurement of the clarity, or turbidity, of water. Turbidity in excess of 5 NTU is just noticeable to the average person. pci/l (picocuries per liter): A measure of radioactivity. ppb (parts per billion): One part substance per billion parts water (or micrograms per liter). ppm (parts per million): One part substance per million parts water (or milligrams per liter). TT (Treatment Technique): A required process intended to reduce the level of a contaminant in drinking water. 1 A fecal or E. coli positive followed by the proper repeat sampling absent of any contamination does not generate a violation as long as the total coliform rule has not been violated. For a system taking over 40 samples per month, this result is then totaled with any total coliform positive compliance results for the month to determine percentage compliance with the total coliform rule. 2 EPA considers 50 pci/l to be the level of concern for beta particles. Beta results reported in pci/l. Level detected is the highest detected level at sampling point. 3 The level detected is the highest single daily sample collected at the entrance to the distribution system. 4 The monthly TOC removal ratio is the ratio between the actual TOC removal and the TOC rule removal requirements.