Tap water in St. John, IN — ZIP 46311
3 public water systems serving about 66,394 people.
B
Good
Water systems serving 46311
St. John Municipal Water Utility
PWSID IN5245043 · serves 25,700 ·
groundwater
0 health-based / 0 total violations (5 yrs)
Munster Water Company
PWSID IN5245031 · serves 23,894 ·
surface water
0 health-based / 4 total violations (5 yrs)
Dyer Water Department
PWSID IN5245011 · serves 16,800 ·
surface water
0 health-based / 0 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