Tap water in Rancho Cordova, CA — ZIP 93420
3 public water systems serving about 30,073 people. PFAS "forever chemicals" have been detected here.
D
Poor
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 93420
City Of Arroyo Grande Utilities Division
PWSID CA4010001 · serves 17,963 ·
surface water
0 health-based / 1 total violations (5 yrs)
· PFAS up to 11 ppt — above federal limit
Oceano Comm Services Dist.
PWSID CA4010005 · serves 7,598 ·
surface water
0 health-based / 0 total violations (5 yrs)
Golden State Water Company - Nipomo
PWSID CA4010018 · serves 4,512 ·
surface water
0 health-based / 0 total violations (5 yrs)
· PFAS up to 3.2 ppt
Grades summarize EPA SDWIS violation records (last 5 years) and UCMR 5 PFAS results. They are informational, not a health determination. Methodology