PWSID
CA0409181
State
California
City
CHICO
Population served
81
Primary source
Groundwater
Score history
No change since tracking began Jun 18, 2026.
2 score updates logged since tracking began Jun 18, 2026. Each future EPA re-score adds a point.
PFAS & contaminant readings
No PFAS detections are on record for this system from EPA’s UCMR5 monitoring (2023–25). Absence of a detection isn’t a guarantee — not every system was sampled, and this dataset doesn’t cover other contaminants.
Violations & enforcement
7
Violations on record
1
Unaddressed
0
Health-based
10
Enforcement actions
From EPA ECHO (SDWIS), most recent enforcement Oct 2025. Official EPA record →
Recent enforcement actions
- State action · SOX Oct 2025
- State action · SFJ Oct 2025
- State action · SFJ Feb 2023
- State action · SOX Jan 2023
- State action · SOX Dec 2015
- State action · SIA Dec 2015
- State action · SOX Sep 2008
- State action · SIA Sep 2008
This profile is built from EPA public records for system CA0409181 — 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.