💧 ZIP Water Report

Tap water in Ontario, OH — ZIP 44903

3 public water systems serving about 62,281 people.

F
Failing

Water systems serving 44903

Mansfield City
PWSID OH7002914 · serves 51,000 · surface water
5 health-based / 8 total violations (5 yrs)
F
Ontario City
PWSID OH7003512 · serves 6,756 · groundwater
0 health-based / 1 total violations (5 yrs)
A
Crestline Village Pws
PWSID OH1700112 · serves 4,525 · groundwater
0 health-based / 1 total violations (5 yrs)
A

Grades summarize EPA SDWIS violation records (last 5 years) and UCMR 5 PFAS results. They are informational, not a health determination. Methodology