PWSID
CA4500200
State
California
City
STOCKTON
Population served
120
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
4
Violations on record
1
Unaddressed
0
Health-based
10
Enforcement actions
From EPA ECHO (SDWIS), most recent enforcement Oct 2022. Official EPA record →
Recent enforcement actions
- State action · SOX Oct 2022
- State action · SFL Oct 2022
- State action · SOX Jan 2009
- State action · SOX Nov 2008
- State action · SOX Jul 2008
- State action · SOX Jan 2008
- State action · SFG Dec 2007
- State action · SOX Feb 2007
This profile is built from EPA public records for system CA4500200 — 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.