Brooklyn Park Water Hardness & Quality Report (2026)

The City of Brooklyn Park Utilities Department supplies drinking water to over 86,000 residents in Brooklyn Park, Minnesota, located in Hennepin County. Water is sourced exclusively from groundwater via 14–17 wells ranging from 213 to 617 feet deep, tapping multiple deep aquifer systems beneath the city. These wells feed the city's water treatment plant, where iron and manganese are removed prior to distribution. The utility operates under oversight from the Minnesota Department of Health, MPCA, and EPA to ensure compliance with all drinking water standards.

The supply originates from deep groundwater aquifers beneath the glacial till of the Upper Mississippi River watershed. Key formations include the Cambrian Tunnel City-Wonewoc sandstones, Franconia-Mt. Simon, Ordovician Jordan sandstone, and Quaternary buried artesian and drift aquifers. These Paleozoic carbonate and siliciclastic rocks, overlain by glacial deposits, contribute dissolved minerals to the water, yielding a hard supply rich in calcium and magnesium from prolonged contact with limestone and dolomite strata.

Very hard water leaves significant scale buildup in pipes, water heaters, dishwashers, washing machines, and fixtures, reducing efficiency and lifespan — water heaters may fail prematurely. Soap lathers poorly, increasing detergent use, and spotting occurs on glassware. The city recommends home water softeners, set to leave 6–7 grains per gallon residual hardness; a $100 rebate program incentivizes efficient on-demand models. Water pH ranges from 7.4–7.8; the utility meets Safe Drinking Water Act standards with weekly testing by state-certified labs. Iron and manganese are treated at the plant; no major lead or copper issues are reported.