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Water system · PWSID 090605164

Big Valley Rancheria Water District

Lakeport, CA · ~417 people served

Check your exact address → Lakeport overview
100
Excellent
PurityRadar safety score

PWSID

090605164

State

California

City

Lakeport

Population served

417

Primary source

Groundwater

Score history

No change since tracking began Jun 18, 2026.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 100

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

2

Violations on record

0

Unaddressed

1

Health-based

142

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Aug 2019. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Jul 2018 Resolved
Max contaminant level (MCL) · Total coliform health-based began May 2004 Resolved

Recent enforcement actions

  • EPA/federal action · EOX Aug 2019
  • EPA/federal action · EOX Apr 2014
  • EPA/federal action · EOX Apr 2014
  • EPA/federal action · EOX Apr 2014
  • EPA/federal action · EOX Apr 2014
  • EPA/federal action · EOX Apr 2014
  • EPA/federal action · EIC Dec 2011
  • EPA/federal action · EIC Dec 2011

This profile is built from EPA public records for system 090605164 — 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.