💧 ZIP Water Report

Tap water in Mariposa, CA — ZIP 95338

1 public water system serving about 798 people.

A
Excellent

Water systems serving 95338

Ponderosa Basin Mutual Wtr Co
PWSID CA2210002 · serves 798 · 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