City ofFlorida City 2023 Annual Drinking Water Quality Report PWS #4130255 Este informe contiene informacion muy importante sobre agua de beber. Traduzcalo 0 hable con alguien que lo entienda bien. Si usted quiere este reporte de Calidad de. Agua en Espanol, por favor llamar a este numero de telefono 305-248-6855. We're pleased to present to you this year's Annual Drinking Water Quality Report. This report is designed to inform you about the quality water and services we deliver to you every day. Our constant goal is to provide you with a safe and dependable supply of drinking water. We want you to understand the efforts we make to continually improve the water treatment process and protect our water resources. We are committed to ensuring the quality ofy your water. Our water source is: groundwater from the Biscayne Aquifer. The water is disinfected by chlorination. In 2023 the Department of Environmental Protection performed a Source Water Assessment on our system. The assessment was conducted to provide information about any potential sources of contamination in the vicinity of our wells. There are 4 potential sources of contamination identified for this system with a low susceptibility. The assessment results are available on the FDEP Source Water Assessment and Protection Program website Pdpdp.nee If you have any questions about this report or concerning your water utility, please contact the Utilities office at 305-248-6855. We encourage our valued customers to be informed about their water utility. If you want to learn more, please attend any of our regularly scheduled meetings. The City of Florida City routinely monitors for contaminants in your drinking water according to Federal and State laws, rules, and regulations. Except where indicated otherwise, this report is based on the results of our monitoring for the period of January 1 to December 31, 2023. Data obtained before January 1, 2023, and presented in this report are from the most recent testing done in accordance with the laws, rules, and regulations. In the table below, you may find infamiliar terms and abbreviations. To help you better understand these terms we've provided the following definitions: 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 Contaminant Level Goal or MCLG: 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. Action Level(AL): The concentration ofa contaminant that, if exceeded, triggers reatment or other requirements that a water system must follow. Maximum residual disinfectant level or MRDL: The highest level ofa a disinfectant allowed in drinking water. There is convincing evidence that addition of a disinfectant is necessary for control of microbial contaminants. Maximumresidual disinfectant level goal or MRDLG: Thel level ofa drinking water disinfectant below which there is no known or expected risk to health. MRDLGS do not reflect the benefits oft the use of disinfectants to control microbial contaminants. "ND" means not detected and indicates that the substance was not found' by laboratory analysis. Parts per million (ppm) or Milligrams perl liter (mg/): one part by weight of analyte to 1 million parts by weight oft the water sample. Parts per billion (ppb) or Micrograms per liter (ug/L): one part by weight of analyte to 1 billion parts by weight ofthe water sample. Picocurie per liter (pCi/L) : measure of the radioactivity in water. Initial Distribution System] Evaluation (IDSE): An important part oft the Stage 2 Disinfection By-Products Rule (DBPR). The IDSE is a one- time study conducted by water systems to identify distribution system locations with high concentrations oft 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 21 DBPR. Test Results MCL Level Contaminant and Unit of Dates of sampling Violation Detect Range of MCLG MCL Likely Source of Measurement (mo/yr) Y/N ed Results Contamination Radioactive Contaminants Erosion emitters of natural Alpha (pCi/L) 5/23 N 3.1 NA 0 15 deposits Radium 226 + 228 or combined Erosion of natural 5/23 N 0.8 ND-0.8 0 5 radium (pCi/L) deposits Uranium (ug/L) 5/23 N 2.45 NA 0 30 Erosion ofi natural deposits Inorganic Contaminants Contaminant and Dates of MCL Unit of sampling Violation Level Detected Range of MCLG MCL Likely Source of Results Contamination Measurement (mo/yr) Y/N Discharge from petroleum refineries; Antimony (ppb) 3/23 N ND NA 6 6 fire retardants; ceramics; electronics; solder Pollution from mining Nickel (ppb) 3/23 N ND NA N/A 100 and refining operations. Natural occurrence in soil Runoff from fertilizer Nitrate (as use; leaching from 9/23 N 0.927 0.656-0.927 10 10 septic tanks, sewage; Nitrogen) (ppm) erosion of natural deposits Stage 2 Disinfectants and Disinfection By-Products For bromate, chloramines, or chlorine, thel level detected is the the highest running anualaverage(RAA. computed quarterly,of monthly avera ges of alls san mples collected. The range of results is the range of results ofallt the individualsamples collected during the past year. For hal loacetic acids or TTHM, the level detected is the highest RAA, computed quarterly, of quarterly averages of all: samples collected if the system is monitoring quarterly ori is the average of all samples taken during the yearift the system monitors less frequently than quarterly. Range of Results is the range ofi individualsample results (lowest tol highest) for all monitoring locations. Disinfectant or Dates of MCL or Level MCLG MRDL Range of MCL or Contaminant and sampling Violation Detected Results or MRDL Likely Source of Contamination Unit of Measurement (mo/yr) Y/N Average MRDLG MRDLG MRDL: = Chlorine (ppm) 1/23-12/23 N 1.6 1.5-1.9 = 4 4.0 Water additive used to control microbes Haloacetic Acids (five) (HAA5) (ppb) 8/23 N 7.6 NA NA MCL = 60 By-product of drinking water disinfection TTHM [Total trihalomethanes) (ppb) 8/23 N 8.1 NA NA MCL: = 80 By-product of drinking water disinfection Contaminant Dates of AL: Exceeded 90th No. of sampling sites AL Source of and Unit of sampling Percentile MCLG (Action Likely Measurement (mo/yr) (Y/N) Result exceeding the. AL Level) Contamination Lead and Copper (Tap Water) Corrosion of household plumbing Copper (tap 4/23-10/23 N 1.09 2 1.3 1.3 systems; erosion of water) (ppm) natural deposits; leaching from wood preservatives Corrosion of Lead (tap water) 4/23-8/23 N 2.2 0 0 15 household plumbing (ppb) systems; erosion of natural deposits (1) Our system missed the sample Barium. Ifp present, some people who drink water containing barium in excess oft the MCL of2 mg/l over many years could experience an increase in their blood pressure. We do not believe that the missed test has any adverse effect upon public health. Our system will strive to meet all future requirements and has taken steps to address the missed sample, including re-sampling. Ifp 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. Florida City is responsible for providing high quality drinking water, but cannot control the variety of materials used inj 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 21 minutes before using water for drinking or cooking. Ifyou 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 PgwNaat The sources ofdrinking 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 psubstances resulting from the presence of animals or. from human activity. Contaminants that may be present in source water include: (A) Microbial contaminants, such as viruses and bacteria, which may come) from sewage treatment plants, septic systems, agricultural livestock operations, and wildlife. (B) Inorganic contaminants, such as salts and metals, which can be naturalpy-occurring or resultfrom urban stormwater. runof industrial or domestic wastewater. discharges, oil and gas production, mining, or farming. (C) Pesticides and herbicides, which nay come from a variety ofsources such as agriculture, urban stormwater. runoff and residential uses. (D) 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. runof and. septic systems. (E) Radioactive contaminants, which can be naturally occurring or be the result ofoil and gas production and mining activities. In order to ensure that tap water is safe to drink, the 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 ofs some contaminants. The presence ofcontaminants 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 1-800-426-4791. In our continuing efforts to. maintain a. safe and dependable water. supply, it may be necessary to make improvements in your water. system. The costs ofthese improvements may be reflected in the ratestructure. Rate adjustments may be necessary in order to address these improvements. Thank youj for allowing us to continue providing your. family with clean, quality water this year. In order to maintain a safe and dependable water. supply, wesometimes need to make mprovements that will benefit all ofour customers. These improvements are. sometimes reflected as rate, structure adjustments. Thank) youj for understanding. Some people may be more vulnerable to contaminants in drinking water than the general population. Immumo-compromibed 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 can be particularly at risk from infections. These people should: seek advice about drinking water from their health care providers. EPA/CDC guidelines on appropriate means to lessen the risk ofinfection by Cryptosporidium and other microbiological contaminants are available from the Safe Drinking Water Hotline (800-426-4791).