Hamtramck Water Hardness & Quality Report (2026)

Hamtramck, Michigan, in Wayne County — a small incorporated city entirely surrounded by the City of Detroit, famous as the original home of the Detroit automotive industry (Dodge Brothers Manufacturing), one of the most densely populated cities in the United States, and now a vibrant multicultural immigrant community — receives its municipal water from the Great Lakes Water Authority (GLWA) or the Detroit Water and Sewerage Department (DWSD), which draws from Lake Huron through GLWA's regional water supply infrastructure. Hamtramck's water is an integral part of the Detroit metropolitan DWSD distribution system.

The moderately hard 103.5 mg/L hardness and TDS of 172.4 mg/L reflect the Lake Huron supply after GLWA treatment softening. Lake Huron receives carbonate tributary drainage from Michigan's Silurian Niagara Dolomite and Devonian limestone platform — input that would naturally produce harder lake water (~150–180 mg/L). The GLWA's regional water treatment plants apply lime softening that reduces the raw lake hardness to the moderate finished hardness distributed throughout the Detroit metropolitan area. Hamtramck's reading (~103.5 mg/L) reflects the DWSD distribution zone for the inner Detroit enclave communities, where treatment softening is effectively delivered.

At 103.5 mg/L, Hamtramck's water is moderately hard — manageable for household use. Scale builds in kettles and appliances over months, the dishwasher benefits from rinse aid, and faucet aerators need periodic cleaning. Quarterly descaling of heating appliances is appropriate. The PFAS level of 6.2 ppt warrants a certified drinking water filter — the Detroit metropolitan area's enormous automotive manufacturing complex (Chrysler, Ford, GM plants and suppliers), the Hamtramck-Detroit industrial corridor's stamping plants and paint facilities, and Lake Michigan tributary industrial discharge from Michigan and Indiana contribute to PFAS in the DWSD-GLWA supply system.