Blaine Water Hardness & Quality Report (2026)

Blaine, Minnesota, in northeast Anoka County — a rapidly growing northern Twin Cities suburb, known for the National Sports Center (largest amateur sports facility in the world) and as a hockey-centric community — draws its municipal water supply from the Minneapolis Water Works treated Mississippi River water and local Anoka County groundwater via the City of Blaine Public Works Water Division. Water hardness in Blaine measures 124 mg/L — classified as moderately hard.

Blaine's moderate hardness reflects the northeast Anoka County supply blend from the Minneapolis Water Works. The Minneapolis Water Works treats Mississippi River water at the Fridley Water Treatment Facility, distributing moderately hard supply throughout the northern Twin Cities metro. Blaine receives this surface water through the Anoka County regional distribution, supplemented by local Anoka Sand Plain Aquifer (Quaternary calcareous glaciofluvial sand and gravel) wells. The 124 mg/L in northeast Blaine is slightly harder than the Minneapolis source alone — the local Anoka Sand Plain groundwater contribution adds moderate calcareous content from the Des Moines Lobe glacial till origin of the Anoka Sand Plain deposits.

At 124 mg/L, Blaine residents encounter moderate scale accumulation. Faucet aerators and showerheads develop deposits after several months — monthly cleaning with citric acid solution is practical maintenance. City of Blaine Public Works Water Division consistently delivers water meeting all Minnesota MDH and EPA Safe Drinking Water Act requirements.