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Water system · PWSID CA1910067

LOS ANGELES-CITY, DEPT. OF WATER & POWER

LOS ANGELES, CA · ~7,751,132 people served

Check your exact address → LOS ANGELES overview
100
Excellent
PurityRadar safety score

PWSID

CA1910067

State

California

City

LOS ANGELES

Population served

7,751,132

Primary source

Surface water

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 Sep 2024). Levels in parts per trillion (ppt).

Lithium

47,400 ppt

limit —

No federal limit

Violations & enforcement

7

Violations on record

0

Unaddressed

5

Health-based

31

Enforcement actions

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

Treatment technique · EPA contaminant 0800 health-based began Jan 2018 Resolved
Monitoring & reporting · EPA contaminant 0300 began Mar 2016 Resolved
Other · EPA contaminant 0700 began Jan 2016 Resolved
Treatment technique · EPA contaminant 0700 health-based began Jan 2016 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jun 2014 Resolved
Treatment technique · EPA contaminant 0200 health-based began Jun 1993 Resolved
Treatment technique · EPA contaminant 0200 health-based began Jan 1992 Resolved

Recent enforcement actions

  • EPA/federal action · EIA Dec 2024
  • State action · SFL Feb 2018
  • State action · SOX Jan 2018
  • State action · SOX Jun 2016
  • State action · SFL Jun 2016
  • State action · SFL Apr 2016
  • State action · SOX Jan 2016
  • State action · SFL Aug 2014

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

7 stations · latest Mar 2021

2.08 · max 4.24 mg/l as N · 14

Arsenic

9 stations · latest Mar 2021

0.63 · max 1.6 ug/l · 9

Fluoride

9 stations · latest Mar 2021

0.34 · max 0.81 mg/l · 9

Manganese

9 stations · latest Mar 2021

15.8 · max 306 ug/l · 9

Copper

1 station · latest Jul 2021

4.7 · max 4.8 ug/L · 3

Lead

2 stations · latest Mar 2021

0.153 · max 0.17 ug/l · 2

Uranium

2 stations · latest Mar 2021

5.51 · max 8.32 ug/l · 2

Atrazine

1 station · latest Sep 2020

0.005 · max 0.005 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 CA1910067 — 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.