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Water system · PWSID CA1510012

LAMONT PUBLIC UTILITY DIST

LAMONT, CA · ~19,057 people served

Check your exact address → LAMONT overview
100
Excellent
PurityRadar safety score

PWSID

CA1510012

State

California

City

LAMONT

Population served

19,057

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

Latest detections from EPA’s UCMR5 monitoring (through May 2024). Levels in parts per trillion (ppt).

Lithium

10,000 ppt

limit —

No federal limit

Violations & enforcement

48

Violations on record

0

Unaddressed

39

Health-based

19

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Feb 2020. Official EPA record →

Max contaminant level (MCL) · Arsenic health-based began Jul 2018 Resolved
Max contaminant level (MCL) · Arsenic health-based began Oct 2017 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jul 2017 Resolved
Max contaminant level (MCL) · Arsenic health-based began Apr 2017 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jan 2017 Resolved
Max contaminant level (MCL) · Arsenic health-based began Apr 2014 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jan 2014 Resolved
Max contaminant level (MCL) · Arsenic health-based began Oct 2013 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jul 2013 Resolved
Max contaminant level (MCL) · Arsenic health-based began Apr 2013 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jan 2013 Resolved
Max contaminant level (MCL) · Arsenic health-based began Oct 2012 Resolved

Recent enforcement actions

  • State action · SOX Feb 2020
  • State action · SOX Mar 2018
  • State action · SFL May 2017
  • State action · SO6 May 2017
  • State action · SOX Jan 2012
  • State action · SFL Dec 2010
  • State action · SIA Feb 2010
  • State action · SFL Dec 2008

Area water-quality monitoring

Environmental monitoring (rivers, wells, intakes) recorded in this system’s service area in the EPA/USGS Water Quality Portal since 2018 — source/ambient water, not finished tap water. Context for the watershed, not a reading from your tap.

ContaminantMedian · max · samples

Nitrate

1 station · latest Mar 2021

9.11 · max 9.11 mg/l as N · 2

Arsenic

1 station · latest Mar 2021

7.9 · max 7.9 ug/l · 1

Atrazine

1 station · latest Mar 2021

0.007 · max 0.007 ug/l · 1

Fluoride

1 station · latest Mar 2021

0.15 · max 0.15 mg/l · 1

Lead

1 station · latest Mar 2021

0.092 · max 0.092 ug/l · 1

Uranium

1 station · latest Mar 2021

3.22 · max 3.22 ug/l · 1

Source: Water Quality Portal (EPA/USGS/state agencies). Values are as-reported and aren’t health thresholds.

This profile is built from EPA public records for system CA1510012 — 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.