Annual Drinking Water Quality Report Bel

Annual Drinking Water Quality Report Belfield, North Dakota 2022 We are pleased to present to you this year's Annual Drinking Water Quality Report. This report is designed to inform you about the safe clean water 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 of your water. Our water source is treated surface water purchased from the Southwest Water Authority (SWA). The source of SWA water is Lake Sakakawea. The SWA then delivers the partially treated water to a lime-softening treatment plant at Dickinson. The water is then clarified, softened, filtered, and disinfected before being delivered to our customers. The North Dakota Department of Environmental Quality has prepared a Source Water Assessment for the city of Belfield and the SWA. Information regarding this program is available upon request. The SWA, in cooperation with the North Dakota Department of Environmental Quality, has completed the delineation and contaminant/land use inventory elements of the North Dakota Source Water Protection Program. Based on the information from these elements, the North Dakota Department of Environmental Quality has determined that our source water is "moderately susceptible" to potential contaminants. No significant sources of contamination have been identified. Any questions about this report or concerning your water utility, please contact Kevin Anderson at 701-575-4235. We want our valued customers to be informed about their water utility. If you want to learn more, please attend any of our regularly scheduled meetings. They are held on the second Tuesday of every month at 5:00pm at the Belfield City Hall. If you are aware of non- English speaking individuals who need help with the appropriate language translation, please call Kevin Anderson at the number listed above. The city of Belfield would appreciate it if large volume water customers would please post copies of the Annual Drinking Water Quality Report in conspicuous locations or distribute them to tenants, residents, patients, students, and/or employees, so individuals who consume the water, but do not receive a water bill, can learn about our water system. The city of Belfield routinely monitors for contaminants in your drinking water according to Federal and State laws. The following table shows the results of our monitoring for the period of January 1 st to December 31 st , 2022. As authorized and approved by EPA, the state has reduced monitoring requirements for certain contaminants to less often than once per year because the concentrations of these contaminants are not expected to vary significantly from year to year. Some of our data [e.g., for inorganic contaminants], though representative, is more than one year old. The sources of drinking water (both tap 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 Environmental Protection Agency (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. In the following table you will find many terms and abbreviations you might not be familiar with. To help you better understand these terms we've provided the following definitions: Not Applicable (NA), No Detect (ND) Parts per million (ppm) or Milligrams per liter (mg/l) - one part per million corresponds to one minute in two years or a single penny in $10,000. Parts per billion (ppb) or Micrograms per liter (g/l)- one part per billion corresponds to one minute in 2,000 years, or a single penny in $10,000,000. Picocuries per liter (pCi/l) - picocuries per liter is a measure of the radioactivity in water. Action Level (AL)- the concentration of a contaminant which, if exceeded, triggers treatment or other requirements which a water system must follow. Treatment Technique (TT) - A treatment technique is a required process intended to reduce the level of a contaminant in drinking water. Maximum Contaminant Level - The “Maximum Allowed” (MCL) is 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 - The “Goal”(MCLG) is 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. Maximum Residual Disinfectant Level (MRDL) – 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. 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 contaminants. IDSE – Initial Distribution Systems Evaluations. Obsvns – Observations/field at 100 Power. 3 TEST RESULTS FOR THE CITY OF BELFIELD and Southwest Water Authority (SWA) 2022 Contaminant MCLG MCL Level Detected Units Range Date (year) Violation Yes/No Other Info Likely Source of Contamination Lead/Copper - Belfield Lead** 0 AL=15 No Detect ppb NA 2022 0 sites exceeded AL Corrosion of household plumbing systems, erosion of natural deposits Copper 1.3 AL=1.3 0.0342 ppm NA 2022 0 sites exceeded AL Corrosion of household plumbing systems; erosion of natural deposits; leaching from wood preservatives Microbiological Contaminants (SWA) Turbidity* NA TT=.3 0.25 NTU NA 2022 100% of samples met Turbidity Limits Soil runoff Inorganic Contaminants (SWA) Nitrate-Nitrite 10 10 0.072 ppm NA 2022 No Runoff from fertilizer use; leaching from septic tanks, sewage; erosion of natural deposits. Stage 2 Disinfection Byproducts Total Halo acetic Acids (HAA5) NA 60 11 ppb NA 2022 No By-product of drinking water chlorination Total Trihalomethanes (TTHMs) NA 80 7 ppb NA 2022 No By-product of drinking water chlorination Disinfectants Chloramines MRDLG =4 MRDL =4.0 3 ppm 2.3 to 3.6 2022 No Water additive used to control microbes Total Organic Carbon Removal (SWA) Alkalinity, Source NA NA 177 mg/l 115.0 to 177.0 2022 No Natural erosion, certain plant activities, certain industrial wastewater discharges Carbon, Total Organic (TOC) - Finished NA TT 2.46 ppm 1.93 to 2.46 2022 No Naturally present in the environment Carbon, Total Organic (TOC)- Source NA TT 3.57 ppm 2.91 to 3.57 2022 No Naturally present in the environment Unregulated Contaminants (SWA) Alkalinity, Carbonate NA NA 6 ppm ND - 6 2022 No Natural erosion, plant activities and certain industrial waste discharges Bicarbonate as HCO 3 NA NA 215 ppm 141 - 215 2022 No Natural erosion, plant activities and certain industrial waste discharges Radioactive Contaminants (SWA) Gross Alpha, Including RA, Excluding RN and U 15 15 0.359 ppb NA 2018 No Erosion of natural deposits Surface Water Treatment Rule Monitoring Data: 4 Lowest Monthly Percentage of Samples Meeting Turbidity Limits= 100 Highest Single Measurement = 0.25 *Turbidity is a measure of the cloudiness of the water. The Southwest Water Authority monitors it because it is a good indicator of the effectiveness of their filtration system. Turbidity is measured every four hours during treatment plant operations. 100% of samples met turbidity limits. **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. The City of Belfield is responsible for providing high quality drinking water but cannot control the variety of materials used in plumbing components. Use water from the cold tap for drinking and cooking. 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 two minutes before using water for drinking or cooking. If you are concerned about lead in your drinking 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 . EPA requires monitoring of over 80 drinking water contaminants. Those contaminants listed in the table above are the only contaminants detected in your drinking water. 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. As you can see by the table, our system had no violations. We are proud that your drinking water meets or exceeds all Federal and State requirements. 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 (1-800-426-4791). MCL’s are set at very stringent levels. To understand the possible health effects described for many regulated contaminants, a person would have to drink two liters of water every day at the MCL level for a lifetime to have a one-in-a-million chance of having the described health effect. Thank you for allowing us to provide your family with clean, quality water this year. In order to maintain a safe and dependable water supply we sometimes need to make improvements that will benefit all of our customers. These improvements sometimes require rate structure adjustments. Some people may be more vulnerable to contaminants in drinking water than the general population. Immuno-compromised 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 of infection by 5 cryptosporidium and other microbiological contaminants are available from the Safe Drinking Water Hotline (1-800-426-4791). Please call our office if you have questions. (April 12, 2023) 211864