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Water system · PWSID CA1500364

KERNVALE MUTUAL WATER CO

LAKE ISABELLA, CA · ~75 people served

Check your exact address → LAKE ISABELLA overview
100
Excellent
PurityRadar safety score

PWSID

CA1500364

State

California

City

LAKE ISABELLA

Population served

75

Primary source

GWP

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

48

Violations on record

0

Unaddressed

25

Health-based

45

Enforcement actions

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

Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2021 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2021 Resolved
Monitoring & reporting · Total coliform began Oct 2013 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jul 2013 Resolved
Other · EPA contaminant 7000 began Jul 2013 Resolved
Max contaminant level (MCL) · Arsenic health-based began Apr 2013 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jan 2013 Resolved
Max contaminant level (MCL) · Arsenic health-based began Oct 2012 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jul 2012 Resolved
Max contaminant level (MCL) · Arsenic health-based began Apr 2012 Resolved
Monitoring & reporting · Nitrate began Jan 2012 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jan 2012 Resolved

Recent enforcement actions

  • State action · SOX Aug 2025
  • State action · SFL May 2022
  • State action · SOX Mar 2018
  • State action · SIA Dec 2013
  • State action · SFL Dec 2013
  • State action · SOX Nov 2013
  • State action · SOX Sep 2013
  • State action · SIA Sep 2013

This profile is built from EPA public records for system CA1500364 — 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.