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Water system · PWSID CA1700589

BLUE LAKES MOBILE HOME PARK

SAN MATEO, CA · ~32 people served

Check your exact address → SAN MATEO overview
85
Excellent
PurityRadar safety score

PWSID

CA1700589

State

California

City

SAN MATEO

Population served

32

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

23

Violations on record

2

Unaddressed

2

Health-based

33

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jan 2018. Official EPA record →

Reporting · EPA contaminant 5200 began Oct 2024 Unaddressed
Treatment technique · EPA contaminant 5200 health-based began Oct 2024 Unaddressed
Monitoring & reporting · Total coliform began Apr 2010 Resolved
Max contaminant level (MCL) · Total coliform health-based began Mar 2009 Resolved
Monitoring & reporting · Total coliform began Mar 2009 Resolved
Monitoring & reporting · Total coliform began May 2008 Resolved
Monitoring & reporting · Total coliform began Aug 2006 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2006 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2006 Resolved
Monitoring & reporting · Total coliform began May 2005 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2005 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2005 Resolved

Recent enforcement actions

  • State action · SOX Jan 2018
  • State action · SOX Jul 2016
  • State action · SOX Jul 2016
  • State action · SOX Jul 2016
  • State action · SFL Jul 2010
  • State action · SIA Apr 2010
  • State action · SOX Apr 2010
  • State action · SFL May 2009

This profile is built from EPA public records for system CA1700589 — 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.