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Source Water Assessment ASource Water Assessment Plan (SWAP) is now available Ilat our office, or you may search for "Elk River" online at hnps://www.health.state.mn.us/communities/environment/ water/swp/swa.html. This plan is an assessment of the delineated area around our listed sources through which contaminants, if present, could migrate and reach our source water. It also includes an inventory of potential sources of contamination within the delineated area and a determination of the water supply's susceptibility to contamination by the identified potential sources. About 90 percent of our drinking water supply management area is considered non -vulnerable; less than 10 percent is vulnerable. Our wellhead protection plan has many items that address limiting or stopping potential contamination. Where Does My Water Come From? Elk River Municipal Utilities' (ERMU) wells are supplied from the Mount Simon -Hinckley Aquifer. ERMU maintains eight wells, six water treatment plants, four water towers, over 125 miles of water main, 1,300 fire hydrants, and just under 3,000 valves. In 2022 ERMU pumped over 866 million gallons of water. We are proud to serve over 5,500 water customers. Important Health Information ome 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 1t! / and other microbial contaminants are available from the Safe "Drinking Water Hotline at (800) 426-4791 or online at: http://water. epa.gov/drink/hotline. PFAS Testing The U.S. EPA has proposed drinking water standards for six of the recognized per- and polyfluoroalkyl substances (PFAS). It plans to create maximum contaminant level goals (MCLG) and maximum ` contaminant levels (MCL) to manage water contamination and mitigation. - PFAS are not regulated under the Safe Drinking Water Act, and community well systems are not required to monitor them at this time. However, ERMU has voluntarily conducted monitoring in 2022 and determined that our system is below any risk level. We, as always, will be following the required guidelines and testing protocols given by the Minnesota Department of Health (MDH). For more information and an interactive dashboard for PFAS, please visit https://www.health.state. mn.us/communities/environment/water/pfasmap.html. Source Water Protection It is important to seal unused wells and contact your county or city to update records. Every unused well is a potential pipeline to contamination if left unsealed. The same goes for contaminants that are put on the ground or in water. Substances that are absorbed into the ground or flow to a waterway percolate down to drinking water sources in variable time lines and can alter our drinking water. Please use caution when using chemicals and getting rid of items that may change the environment. QUESTIONS? For more information about this report, or for any questions relating to your drinking water, please call Elk River Municipal Utilities at (763) 441-2020 — Dave Ninow, Water Superintendent. You may review this report online at https:// www.ermumn.com/services/water/water-quality-report 179