PWSID
CA3410022
State
California
City
FAIR OAKS
Population served
450
Primary source
Groundwater
Score history
▼ 9 points — the score moved from 100 to 91 on Jun 18, 2026, as newly published EPA data was incorporated.
2 score updates logged since tracking began Jun 18, 2026. Each future EPA re-score adds a point.
PFAS & contaminant readings
Latest detections from EPA’s UCMR5 monitoring (through Sep 2025). Levels in parts per trillion (ppt).
PFOA
Perfluorooctanoic acid
4.2 ppt
limit 4 ppt
PFHxS
Perfluorohexanesulfonic acid
4 ppt
limit 10 ppt
PFHpA
3.8 ppt
limit —
PFPeA
3.8 ppt
limit —
PFHxA
3.6 ppt
limit —
Violations & enforcement
2
Violations on record
0
Unaddressed
0
Health-based
3
Enforcement actions
From EPA ECHO (SDWIS), most recent enforcement Sep 2020. Official EPA record →
Recent enforcement actions
- State action · SOX Sep 2020
- State action · SFJ Nov 2019
- EPA/federal action · EOX Sep 2005
This profile is built from EPA public records for system CA3410022 — SDWIS violations and UCMR5 PFAS sampling. The score is system-level and can’t account for your home’s plumbing (older pipes can add lead at the tap). For health decisions, check your exact address, read the utility’s Consumer Confidence Report, and confirm with your provider.