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Water system · PWSID CA1910042

PICO RIVERA - CITY, WATER DEPT.

PICO RIVERA, CA · ~40,600 people served

Check your exact address → PICO RIVERA overview

Action needed

PurityRadar safety score

PWSID

CA1910042

State

California

City

PICO RIVERA

Population served

40,600

Primary source

Groundwater

Score history

▼ 65 points — the score moved from 100 to 35 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 35

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

PFOS

Perfluorooctanesulfonic acid

29 ppt

limit 4 ppt

Above EPA limit · 7.3×

PFOA

Perfluorooctanoic acid

7.6 ppt

limit 4 ppt

Above EPA limit · 1.9×

PFHxS

Perfluorohexanesulfonic acid

3.3 ppt

limit 10 ppt

Below EPA limit

PFPeA

13 ppt

limit —

No federal limit

PFBA

12 ppt

limit —

No federal limit

PFHxA

11 ppt

limit —

No federal limit

PFBS

8.8 ppt

limit —

No federal limit

PFDA

4.1 ppt

limit —

No federal limit

PFHpA

4.1 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Dec 2022. Official EPA record →

Monitoring · Lead & Copper Rule began Nov 2022 Resolved

Monitoring & reporting · EPA contaminant 0999 began Oct 2021 Resolved

Monitoring & reporting · EPA contaminant 3014 began Aug 2021 Resolved

Monitoring & reporting · Total coliform began Nov 2003 Resolved

Monitoring & reporting · Lead & Copper Rule began Jan 1999 Resolved

Max contaminant level (MCL) · Total coliform health-based began Sep 1994 Resolved

Max contaminant level (MCL) · Total coliform health-based began Jul 1994 Resolved

Recent enforcement actions

State action · SOX Dec 2022
State action · SFL Nov 2022
State action · SFL Jan 2022
State action · SOX Dec 2021
State action · SOX Nov 2021
State action · SFL Nov 2021
State action · SOX Dec 2010
State action · SOX Feb 2004

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 Jun 2021

4.33 · max 4.33 mg/l as N · 2

Arsenic

1 station · latest Jun 2021

1.8 · max 1.8 ug/l · 1

Atrazine

1 station · latest Jun 2021

0.009 · max 0.009 ug/l · 1

Copper

1 station · latest Jun 2021

1.4 · max 1.4 ug/l · 1

Fluoride

1 station · latest Jun 2021

0.32 · max 0.32 mg/l · 1

Lead

1 station · latest Jun 2021

0.206 · max 0.206 ug/l · 1

Manganese

1 station · latest Jun 2021

5.13 · max 5.13 ug/l · 1

Uranium

1 station · latest Jun 2021

0.831 · max 0.831 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 CA1910042 — 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.