PWSID
CA4900720
State
California
City
SANTA ROSA
Population served
210
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
42
Violations on record
2
Unaddressed
4
Health-based
33
Enforcement actions
From EPA ECHO (SDWIS), most recent enforcement Nov 2025. Official EPA record →
Recent enforcement actions
- State action · SOX Nov 2025
- State action · SFK Sep 2024
- State action · SFL May 2024
- State action · SOX Mar 2024
- State action · SOX Feb 2022
- State action · SFL Mar 2021
- State action · SFO Jan 2021
- State action · SFL Feb 2020
This profile is built from EPA public records for system CA4900720 — 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.