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Water system · PWSID CA3010069

CITY OF FOUNTAIN VALLEY

FOUNTAIN VALLEY, CA · ~56,747 people served

Check your exact address → FOUNTAIN VALLEY overview
100
Excellent
PurityRadar safety score

PWSID

CA3010069

State

California

City

FOUNTAIN VALLEY

Population served

56,747

Primary source

SWP

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

PFHxS

Perfluorohexanesulfonic acid

3.5 ppt

limit 10 ppt

Below EPA limit

Lithium

31,187 ppt

limit —

No federal limit

Violations & enforcement

4

Violations on record

0

Unaddressed

0

Health-based

5

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Apr 2017. Official EPA record →

Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2017 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2017 Resolved
Monitoring & reporting · Total coliform began Sep 2014 Resolved
Monitoring & reporting · Total coliform began Feb 2014 Resolved

Recent enforcement actions

  • State action · SOX Apr 2017
  • State action · SIA Apr 2017
  • State action · SFJ Jun 2015
  • State action · SOX Oct 2014
  • State action · SOX Mar 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

3 stations · latest Jul 2020

1.25 · max 2.71 mg/l as N · 6

Arsenic

3 stations · latest Jul 2020

1.2 · max 1.9 ug/l · 3

Copper

3 stations · latest Jul 2020

0.66 · max 34.2 ug/l · 3

Fluoride

3 stations · latest Jul 2020

0.45 · max 0.46 mg/l · 3

Lead

3 stations · latest Jul 2020

1.99 · max 3.37 ug/l · 3

Uranium

3 stations · latest Jul 2020

5.7 · max 6.43 ug/l · 3

Manganese

1 station · latest Jul 2020

2.02 · max 2.02 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 CA3010069 — 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.