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Water system · PWSID CA2800531

NAPA RIVER RANCH

NAPA, CA · ~70 people served

Check your exact address → NAPA overview
85
Excellent
PurityRadar safety score

PWSID

CA2800531

State

California

City

NAPA

Population served

70

Primary source

Groundwater

Score history

No change since tracking began Jun 18, 2026.

Jun 18, 2026 · score 85 Jun 18, 2026 · score 85

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

26

Violations on record

2

Unaddressed

2

Health-based

34

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Nov 2025. Official EPA record →

Treatment technique · EPA contaminant 5200 health-based began Oct 2024 Unaddressed
Reporting · EPA contaminant 5200 began Oct 2024 Unaddressed
Other · EPA contaminant 7000 began Jul 2025 Addressed
Monitoring & reporting · Lead & Copper Rule began Jul 2025 Addressed
Monitoring & reporting · Lead & Copper Rule began Jan 2025 Addressed
Monitoring & reporting · Lead & Copper Rule began Oct 2023 Resolved
Other · EPA contaminant 7000 began Jul 2023 Resolved
Monitoring & reporting · Nitrate began Jan 2023 Resolved
Treatment technique · Lead & Copper Rule health-based began Dec 2022 Resolved
Reporting · Lead & Copper Rule began Dec 2022 Resolved
Monitoring & reporting · Lead & Copper Rule began Jan 2022 Resolved
Monitoring & reporting · Nitrate began Jan 2021 Resolved

Recent enforcement actions

  • State action · SFO Nov 2025
  • State action · SFO Sep 2025
  • State action · SFO Jun 2025
  • State action · SFO Mar 2025
  • State action · SFO Feb 2025
  • State action · SOX Jun 2024
  • State action · SFL Apr 2024
  • State action · SOX Apr 2024

This profile is built from EPA public records for system CA2800531 — 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.