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Water system · PWSID CA5000048

LAZY B MOBILEHOME PARK

SAN MATEO, CA · ~125 people served

Check your exact address → SAN MATEO overview
100
Excellent
PurityRadar safety score

PWSID

CA5000048

State

California

City

SAN MATEO

Population served

125

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

8

Violations on record

0

Unaddressed

6

Health-based

18

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Mar 2015. Official EPA record →

Max contaminant level (MCL) · Total coliform health-based began Feb 2015 Resolved
Max contaminant level (MCL) · Total coliform health-based began Sep 2007 Resolved
Monitoring & reporting · Total coliform began Dec 2006 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jun 2006 Resolved
Max contaminant level (MCL) · Total coliform health-based began May 2006 Resolved
Max contaminant level (MCL) · Total coliform health-based began Apr 2006 Resolved
Max contaminant level (MCL) · Total coliform health-based began May 2001 Resolved
Monitoring & reporting · Lead & Copper Rule began Jul 1993 Resolved

Recent enforcement actions

  • State action · SOX Mar 2015
  • State action · SFL Mar 2015
  • State action · SOX Oct 2007
  • State action · SIA Sep 2007
  • State action · SOX Jan 2007
  • State action · SIA Jan 2007
  • State action · SOX Jul 2006
  • State action · SIC Jul 2006

This profile is built from EPA public records for system CA5000048 — 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.