Germantown board adopts sanitary sewer service area amendment, moves to update 2050 plan

The Village of Germantown on July 21 adopted a resolution to update the village sanitary sewer service area and approved companion amendments to the village 2050 comprehensive plan to reflect the revised boundaries. The amendments add seven areas totaling about 1,369 acres and remove two areas totaling about 197 acres, for a net increase of roughly 1,172 acres in the sanitary sewer service area. Village and regional staff said the change is intended to identify where public sewer could be extended over the next five to 15 years and to keep Germantown's plans consistent with regional and Metropolitan Mayors Sewer District (MMSD) facility planning. Sewer-area planning is required under the federal Clean Water Act and related Wisconsin administrative rules; the Village's draft community assistance planning report (Community Assistance Planning Report No. 70, 2nd ed., dated June 25, 2025) and the resolution will be forwarded to the Southeastern Wisconsin Regional Planning Commission (SEWRPC or "the commission") for its Planning and Research Committee and then to the full commission for action. After commission approval the amendment goes to the Wisconsin Department of Natural Resources (DNR) for final review and action. Why it matters: the service-area boundary determines where sewers may be extended, affects consistency with the village's 2050 land-use plan and MMSD facilities planning, and can trigger long-term infrastructure and capital-cost planning. Staff estimated the added acreage could accommodate population growth as areas build out; SEWRPC estimated the addition could increase the sanitary-service-area population by several thousand at full build-out. Key details: SEWRPC staff and village staff told the board that MMSD has indicated available interceptor capacity to serve the areas proposed for addition, though MMSD noted some lift-station upgrades may be required in time and that the village's sanitary sewer facilities plan update (May 2025) documents possible improvements. Board discussion touched on several practical and policy concerns: whether updated FEMA flood maps should be incorporated before final adoption, potential costs that may flow from MMSD capital allocations tied to equalized property value, the need for neighborhood meetings and master-plan work in some districts (including the Holy Hill/Gateway area), and protection of primary and secondary environmental corridors. SEWRPC staff and village public-works staff said reviews of specific sewer extensions will use the most current FEMA and wetland data available at the time of the extension review; the village will also continue neighborhood planning and hold public meetings where required. Next steps and conditions: the board's action sends the resolution and the planning report to SEWRPC for committee and commission review (possible committee review in August and commission action in September on the preliminary schedule). If the board elects to revise the draft based on public or trustee comments, SEWRPC review and DNR review would be delayed. Any local ordinance or village decision to require property owners to connect to public sewer would be made separately; staff said the village has not historically required connections when properties are added to the sewer service area. From the meeting: the board held a joint public hearing with SEWRPC earlier in the evening; several residents raised questions about notice to property owners, whether property owners would be required to connect, environmental corridors, and whether to wait for FEMA map updates. SEWRPC and village staff responded point-by-point and advised the board of the regulatory review steps that remain. The board approved the resolution to adopt the SSA amendment and separately approved the ordinance amendment to the 2050 comprehensive plan to keep the documents consistent. Implementation and dependencies: the sanitary sewer service area update is advisory to SEWRPC and subject to DNR approval; the village public-works department will be the primary implementing department for future detailed facilities planning and lift-station studies. The board directed staff to proceed with the SEWRPC/DNR submittals and to schedule neighborhood meetings and more-detailed cost analysis where appropriate.