Home/ Directory/ CA/ YUCAIPA VALLEY WATER DISTRICT

Water system · PWSID CA3610055

YUCAIPA VALLEY WATER DISTRICT

YUCAIPA, CA · ~52,010 people served

Check your exact address → YUCAIPA overview
91
Excellent
PurityRadar safety score

PWSID

CA3610055

State

California

City

YUCAIPA

Population served

52,010

Primary source

Surface water

Score history

▼ 9 points — the score moved from 100 to 91 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 91

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

PFOA

Perfluorooctanoic acid

4.2 ppt

limit 4 ppt

Above EPA limit · 1.0×

PFBS

10 ppt

limit —

No federal limit

PFPeA

6.9 ppt

limit —

No federal limit

PFHxA

5.8 ppt

limit —

No federal limit

Violations & enforcement

9

Violations on record

0

Unaddressed

5

Health-based

10

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Oct 2025. Official EPA record →

Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jul 2024 Resolved
Max contaminant level (MCL) · Nitrate health-based began Apr 2023 Resolved
Other · EPA contaminant 7500 began Apr 2021 Resolved
Monitoring & reporting · Nitrate began Apr 2021 Resolved
Other · EPA contaminant 7500 began Jul 2019 Resolved
Max contaminant level (MCL) · Nitrate health-based began Jul 2019 Resolved
Max contaminant level (MCL) · Nitrate health-based began Jul 2019 Resolved
Monitoring & reporting · Lead & Copper Rule began Jun 2016 Resolved
Treatment technique · EPA contaminant 0200 health-based began Jun 1991 Resolved

Recent enforcement actions

  • State action · SOX Oct 2025
  • State action · SFL Nov 2024
  • State action · SOX Oct 2023
  • State action · SFL Jun 2023
  • State action · SOX Jun 2017
  • State action · SFL Feb 2017
  • State action · SOX Oct 1996
  • State action · SIA Mar 1995

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

4 stations · latest May 2022

3.37 · max 7.51 mg/l as N · 8

Fluoride

4 stations · latest May 2022

0.575 · max 0.63 mg/l · 4

Uranium

4 stations · latest May 2022

0.909 · max 1.61 ug/l · 4

Arsenic

2 stations · latest May 2022

0.425 · max 0.69 ug/l · 2

Manganese

2 stations · latest May 2022

1.62 · max 2.67 ug/l · 2

Copper

1 station · latest May 2022

5.8 · max 5.8 ug/l · 1

Lead

1 station · latest May 2022

0.984 · max 0.984 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 CA3610055 — 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.