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Water system · PWSID WI4430494

RUSTIC ACRES MHP

COSTA MESA, CA · ~90 people served

Check your exact address → COSTA MESA overview
100
Excellent
PurityRadar safety score

PWSID

WI4430494

State

California

City

COSTA MESA

Population served

90

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

17

Violations on record

0

Unaddressed

2

Health-based

61

Enforcement actions

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

Max contaminant level (MCL) · Uranium health-based began Oct 2022 Resolved
Monitoring & reporting · EPA contaminant 3014 began Dec 2019 Resolved
Monitoring & reporting · EPA contaminant 3014 began Jun 2019 Resolved
Monitoring & reporting · Total coliform began Jun 2011 Resolved
Monitoring & reporting · Total coliform began May 2011 Resolved
Monitoring & reporting · Total coliform began Apr 2011 Resolved
Monitoring & reporting · EPA contaminant 0999 began Apr 2011 Resolved
Monitoring & reporting · EPA contaminant 0999 began Apr 2009 Resolved
Monitoring & reporting · Total coliform began Apr 2009 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2008 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2008 Resolved
Monitoring & reporting · Total coliform began Jan 2006 Resolved

Recent enforcement actions

  • State action · SOX Feb 2023
  • State action · SIF Feb 2023
  • State action · SIA Jan 2023
  • State action · SIE Jan 2023
  • State action · SIF Jan 2023
  • State action · SIA Apr 2020
  • State action · SIE Apr 2020
  • State action · SIF Apr 2020

This profile is built from EPA public records for system WI4430494 — 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.