Shorewood Water Hardness & Quality Report (2026)

The Shorewood Municipal Water Utility, serving about 2.4 square miles in Milwaukee County, Wisconsin, purchases all its treated drinking water wholesale from Milwaukee Water Works. The latter utility operates the Howard Avenue and Des Plaines treatment plants, drawing its primary supply from Lake Michigan. This vast Great Lakes reservoir is fed by precipitation and rivers, with minimal evaporative concentration due to its immense volume. Residents can find more details by contacting the Shorewood Department of Public Works at (414) 847-2650 or by visiting www.villageofshorewood.org/water.

The Lake Michigan watershed is underlain by ancient Precambrian shield rock, topped with thick Pleistocene glacial deposits and exposed Paleozoic strata. These include Silurian dolomite beds, but their contribution of minerals to the surface water is sparse. Because the water originates in the lake, it has limited interaction with these underground rock formations compared to groundwater sources. This geological setting results in Shorewood's naturally soft water, which has a low dissolved mineral content and avoids the hardness typically associated with water drawn from mineral-rich aquifers.

Because Shorewood's water is soft, you'll find negligible scale buildup on your faucets, pipes, and heating elements. This protects appliances like water heaters, dishwashers, and washing machines from mineral deposits that can shorten their lifespan. Soap and detergents lather easily, meaning you don't need to use as much, and you won't see spotting on glassware after it dries. You won't need to perform regular descaling maintenance, and installing a water softener isn't recommended, as it could add unnecessary sodium to your supply. These benefits contribute to efficient appliance operation and lower upkeep costs for homeowners.