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City of Centerville 2030 Comprehensive Plan Update Page 2 10/29/08 local or regional water resources. Cooperation and assistance is available to adequately manage and sustain the "waters ofthe State of Minnesota" through regulatory and consulting programs of the Minnesota Department of Natural Resources. As the Metropolitan Council has deemed that there are no major limitations on groundwater withdrawal and that groundwater resources are adequate, Cente/Vllle will continue to reassess water supply issues as more information becomes available. Cente/Ville will explore resources to assess the base level of aquifer resources, but cannot complete this assessment in time for the completion of the Comprehensive Plan update. · Water Supply Background This section provides background on the city's water supply systcm that utilizcs groundwater through its municipal wells. Discussion of city groundwater resources in this section will support groundwater protection and monitoring activities identified in the subsequent Natural Rc,:sources Goals and Policics section. We believe that additional background information should be included from existing reports and sources. o The city's Wellhead Protection Plan Part I included a "vulnerability assessment" ofthe city's two wells to pollution. Well #1 was determined to be non-vulnerable. Well 112 was determined to be vulnerable. The report also indicates that the location and well depth playa role in determining the "vulncrability" of the cily's wells. o The plan states that the city recently completed its Watcr Emergency and Conservation Plan. The background information contained in the city's recently completed Water Emergency and Conservation Plan for its water system should be summarized here. o The city maintains records on use of groundwatcr (in their municipal water supply system) that is submitted to Minnesota DNR. These annual water use data are provided to the city when requested. We recommend that the background information on Centerville' s water supply system include a summary ofthe information from the wellhead protection plan, groundwater resources contained in the Water Emergency and Conservation Plan and the DNR groundwater appropriation and withdrawal program. The Background section of the plan has been updated to include a summary of information relevant to the Wellhead protection plan and the Water Emergency and Conse/Vation Plan. Natural Resources Goals and Policies . Groundwater resources sustain Ccnterville's water supply system. However, the effect of local and regional groundwater withdrawal in Centerville and adjacent developing communities may not be adequately monitored. Also, the city has completed its wellhead protection plan that indicates goals and policies for the protection of groundwater resources used by municipal wells. . The Minnesota DNR operates a Ground Water Level Monitoring Program to monitor changes and trends in groundwater availability. Through the collection and analysis of this groundwater information, the city can demonstrate that it is taking an active part in monitoring its water resources and managing its water supply system. . We recommend that an additional goal should be to sustain groundwater resources within the city and cooperate with the Minnesota DNR - Groundwater Levcl Monitoring Program to monitor water levels in its municipal wells. . The city should consider including il~ wellhead protection goals into this section.