Tap water in Williamstown, MO — ZIP 60630
2 public water systems serving about 2,729,308 people.
B
Good
Water systems serving 60630
Chicago
PWSID IL0316000 · serves 2,721,308 ·
surface water
0 health-based / 9 total violations (5 yrs)
Clark County Cons Pwsd 1
PWSID MO2024138 · serves 8,000 ·
groundwater
0 health-based / 2 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