PWSID
CA4500247
State
California
City
CHICO
Population served
90
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
8
Violations on record
2
Unaddressed
1
Health-based
10
Enforcement actions
From EPA ECHO (SDWIS), most recent enforcement Sep 2025. Official EPA record →
Recent enforcement actions
- State action · SOX Sep 2025
- State action · SFL Sep 2025
- State action · SOX Aug 2025
- State action · SOX Aug 2025
- State action · SFL Sep 2024
- State action · SFL Feb 2024
- State action · SFL Jan 2024
- State action · SFL Dec 2023
This profile is built from EPA public records for system CA4500247 — 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.