Agenda - Parks and Recreation Commission - 04/10/2014

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D. DRINKING WATER QUALITY STANDARDS AND GOALS Numerous Federal and State regulations regulate drinking water quality. In addition, the finished drinking water quality must meet local expectations for taste, odor, hardness, and general quality. Through the passage of the Safe Drinking Water Act (SDWA) in 1974, the U.S. Congress authorized the United States Environmental Protection Agency (EPA) to establish drinking water regulations that apply to all public water systems in the United States. State governments, through their health departments and environmental agencies, are responsible for implementation and enforcement of the act's provisions. The major components of the SDWA of interest to the City of Ramsey are as follows: • National Primary Drinking Water Regulations (NPDWRs) • Radionuclides Rule (except radon) • Radon Rule • Disinfection/Disinfection By -Products Rules (D/DBP) • Total Coliform Rule • Groundwater Rules • Drinking Water Contaminant Candidate List (DWCCL) Water provided by the Ramsey water supply system has levels in excess of the recommended levels for iron and manganese. E. WATER SUPPLY AND TREATMENT 1. Ground Water Sources As discussed in previous sections, the City currently obtains drinking water from the Ironton -Galesville aquifer system. This system is utilized extensively by surrounding communities. Minnesota Department of Natural Resources staff is currently exploring ways to manage this resource in the region, and have requested that Ramsey look into alternate water sources, specifically surface water sources. As noted in previous sections, Ramsey will require up to 10 new wells to meet the water demand in the next 10 years. This represents a substantial increase in the local demand on the Ironton -Galesville aquifer system. City of Ramsey, Minnesota — M21.34343 Page ES -4 Water System Study Prepared by Bolton & Menk, Inc.