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Water system · PWSID CA4410008

MT. HERMON ASSOCIATION, INC.

MOUNT HERMON, CA · ~1,176 people served

Check your exact address → MOUNT HERMON overview
85
Excellent
PurityRadar safety score

PWSID

CA4410008

State

California

City

MOUNT HERMON

Population served

1,176

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

5

Violations on record

2

Unaddressed

1

Health-based

5

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jun 2022. Official EPA record →

Reporting · EPA contaminant 5200 began Oct 2024 Unaddressed
Treatment technique · EPA contaminant 5200 health-based began Oct 2024 Unaddressed
Other · EPA contaminant 0700 began Nov 2021 Resolved
Monitoring & reporting · Nitrate began Jan 2012 Resolved
Monitoring & reporting · Lead & Copper Rule began Jul 1993 Resolved

Recent enforcement actions

  • State action · SOX Jun 2022
  • State action · SFL Dec 2021
  • State action · SFL Jun 2013
  • State action · SOX Jan 2013
  • EPA/federal action · EOX Mar 2000

This profile is built from EPA public records for system CA4410008 — 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.