Tap water in Houghton, MI — ZIP 49931
1 public water system serving about 8,386 people.
A
Excellent
Water systems serving 49931
Houghton
PWSID MI0003230 · serves 8,386 ·
groundwater
0 health-based / 3 total violations (5 yrs)
Grades summarize EPA SDWIS violation records (last 5 years) and UCMR 5 PFAS results. They are informational, not a health determination. Methodology