Tap water in Clearlake, CA — ZIP 95422
3 public water systems serving about 18,323 people. PFAS "forever chemicals" have been detected here.
A
Excellent
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 95422
Highlands Mutual Water Company
PWSID CA1710003 · serves 7,772 ·
surface water
0 health-based / 0 total violations (5 yrs)
Konocti County Water District
PWSID CA1710006 · serves 5,928 ·
surface water
0 health-based / 0 total violations (5 yrs)
· PFAS up to 8.2 ppt
Golden State Water Co.-Clearlake System
PWSID CA1710002 · serves 4,623 ·
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