HIDDEN HOLLOW MHC

HUNTINGTON BEACH, CA · ~400 people served

Check your exact address → HUNTINGTON BEACH overview

100

Excellent

PurityRadar safety score

PWSID

AZ0403362

State

California

City

HUNTINGTON BEACH

Population served

400

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

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Nov 2024. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Sep 2024 Resolved

Reporting · Lead & Copper Rule began Jun 2024 Resolved

Monitoring & reporting · Arsenic began Oct 2022 Resolved

Reporting · Lead & Copper Rule began Mar 2017 Resolved

Monitoring & reporting · Total coliform began Aug 2015 Resolved

Monitoring & reporting · EPA contaminant 3014 began Jul 2015 Resolved

Monitoring & reporting · Arsenic began Jul 2011 Resolved

Monitoring & reporting · Arsenic began Jul 2010 Resolved

Other · EPA contaminant 7000 began Jul 2008 Resolved

Monitoring & reporting · Total coliform began Mar 2008 Resolved

Monitoring & reporting · Lead & Copper Rule began Oct 2007 Resolved

Other · EPA contaminant 7000 began Jul 2005 Resolved

Recent enforcement actions

State action · SIA Nov 2024
State action · SOX Sep 2024
State action · SIA Jul 2024
State action · SOX Jul 2024
State action · SIA Feb 2023
State action · SOX Feb 2023
State action · SOX Apr 2017
State action · SOX Nov 2015

This profile is built from EPA public records for system AZ0403362 — 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.