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Water system · PWSID CA5301001

BUCKTAIL MUTUAL WATER COMPANY

NAPA, CA · ~42 people served

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

PWSID

CA5301001

State

California

City

NAPA

Population served

42

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

13

Violations on record

3

Unaddressed

8

Health-based

14

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Sep 2023. Official EPA record →

Reporting · EPA contaminant 5200 began Oct 2024 Unaddressed
Treatment technique · EPA contaminant 5200 health-based began Oct 2024 Unaddressed
Monitoring & reporting · Lead & Copper Rule began Oct 2017 Unaddressed
Monitoring · Lead & Copper Rule began Jan 2023 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2019 Resolved
Monitoring & reporting · Lead & Copper Rule began Oct 2017 Resolved
Max contaminant level (MCL) · Total coliform health-based began May 1997 Resolved
Max contaminant level (MCL) · Total coliform health-based began Sep 1996 Resolved
Max contaminant level (MCL) · Total coliform health-based began Aug 1996 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jul 1996 Resolved
Max contaminant level (MCL) · Total coliform health-based began Aug 1995 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jul 1995 Resolved

Recent enforcement actions

  • State action · SOX Sep 2023
  • State action · SFJ Sep 2023
  • State action · SFL Jan 2020
  • State action · SOX Jan 2020
  • State action · SFL Jan 2020
  • State action · SOX Dec 2019
  • State action · SOX Jul 1997
  • State action · SIA Jul 1997

This profile is built from EPA public records for system CA5301001 — 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.