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Water system · PWSID CA4100555

PORTOLA IMPROVEMENT ASSOCIATION MWC

LA HONDA, CA · ~90 people served

Check your exact address → LA HONDA overview
100
Excellent
PurityRadar safety score

PWSID

CA4100555

State

California

City

LA HONDA

Population served

90

Primary source

GU

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

25

Violations on record

0

Unaddressed

0

Health-based

7

Enforcement actions

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

Monitoring & reporting · EPA contaminant 0200 began Mar 2024 Resolved
Monitoring & reporting · Total coliform began Jun 2010 Resolved
Monitoring & reporting · EPA contaminant 2990 began Jan 2005 Resolved
Monitoring & reporting · EPA contaminant 2991 began Jan 2005 Resolved
Monitoring & reporting · EPA contaminant 2981 began Jan 2005 Resolved
Monitoring & reporting · EPA contaminant 2989 began Jan 2005 Resolved
Monitoring & reporting · EPA contaminant 2964 began Jan 2005 Resolved
Monitoring & reporting · EPA contaminant 2992 began Jan 2005 Resolved
Monitoring & reporting · EPA contaminant 2987 began Jan 2005 Resolved
Monitoring & reporting · EPA contaminant 2977 began Jan 2005 Resolved
Monitoring & reporting · EPA contaminant 2982 began Jan 2005 Resolved
Monitoring & reporting · Thallium began Jan 2005 Resolved

Recent enforcement actions

  • State action · SOX Jun 2024
  • State action · SFL Apr 2024
  • State action · SOX Feb 2018
  • State action · SOX Jul 2010
  • State action · SIA Jul 2010
  • State action · SIA May 2006
  • State action · SOX Apr 2000

This profile is built from EPA public records for system CA4100555 — 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.