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Water system · PWSID CA4200848

VISTA HILLS MUTUAL WATER COMPANY

LOMPOC, CA · ~75 people served

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

PWSID

CA4200848

State

California

City

LOMPOC

Population served

75

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

13

Violations on record

0

Unaddressed

5

Health-based

24

Enforcement actions

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

Max contaminant level (MCL) · Antimony health-based began Jan 2025 Resolved
Monitoring & reporting · Lead & Copper Rule began Oct 2023 Addressed
Monitoring & reporting · Lead & Copper Rule began Jun 2018 Resolved
Monitoring & reporting · Nitrate began Jan 2018 Resolved
Monitoring & reporting · Lead & Copper Rule began Oct 2017 Resolved
Other · EPA contaminant 7000 began Jul 2007 Resolved
Other · EPA contaminant 7000 began Jul 2006 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jun 2004 Resolved
Other · EPA contaminant 7000 began Jul 2002 Resolved
Max contaminant level (MCL) · Total coliform health-based began Sep 2000 Resolved
Max contaminant level (MCL) · Total coliform health-based began May 1999 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jun 1997 Resolved

Recent enforcement actions

  • State action · SOX Jul 2025
  • State action · SFM Jun 2025
  • State action · SFL Feb 2025
  • State action · SOX Feb 2020
  • State action · SOX Sep 2019
  • State action · SOX Sep 2019
  • State action · SOX Apr 2019
  • State action · SFL Mar 2019

This profile is built from EPA public records for system CA4200848 — 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.