💧 ZIP Water Report

Tap water in Rohnert Park, CA — ZIP 94928

3 public water systems serving about 233,437 people. PFAS "forever chemicals" have been detected here.

C
Fair
PFAS detected: at least one system serving this ZIP reported PFAS in EPA UCMR 5 testing. Levels and the 2024 federal limits are shown per system below.

Water systems serving 94928

Marin Municipal Water District
PWSID CA2110002 · serves 188,116 · surface water
0 health-based / 0 total violations (5 yrs)
A
Rohnert Park, City Of
PWSID CA4910014 · serves 43,821 · groundwater
0 health-based / 0 total violations (5 yrs) · PFAS up to 7.1 ppt — above federal limit
C
Sonoma State University
PWSID CA4910027 · serves 1,500 · groundwater
0 health-based / 0 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