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Water system · PWSID CA4710002

DUNSMUIR, CITY OF

DUNSMUIR, CA · ~1,707 people served

Check your exact address → DUNSMUIR overview
85
Excellent
PurityRadar safety score

PWSID

CA4710002

State

California

City

DUNSMUIR

Population served

1,707

Primary source

Groundwater

Score history

No change since tracking began Jun 18, 2026.

Jun 18, 2026 · score 85 Jun 18, 2026 · score 85

2 score updates logged since tracking began Jun 18, 2026. Each future EPA re-score adds a point.

PFAS & contaminant readings

No PFAS detections are on record for this system from EPA’s UCMR5 monitoring (2023–25). Absence of a detection isn’t a guarantee — not every system was sampled, and this dataset doesn’t cover other contaminants.

Violations & enforcement

10

Violations on record

2

Unaddressed

6

Health-based

17

Enforcement actions

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

Reporting · EPA contaminant 5200 began Oct 2024 Unaddressed
Treatment technique · EPA contaminant 5200 health-based began Oct 2024 Unaddressed
Treatment technique · Lead & Copper Rule health-based began Apr 2019 Resolved
Treatment technique · Lead & Copper Rule health-based began Mar 2019 Resolved
Treatment technique · EPA contaminant 0400 health-based began Jan 2016 Resolved
Max contaminant level (MCL) · Total coliform health-based began Oct 2015 Resolved
Monitoring & reporting · EPA contaminant 0700 began Feb 2012 Resolved
Other began Feb 2012 Resolved
Monitoring & reporting · Total coliform began Feb 2012 Resolved
Max contaminant level (MCL) · Total coliform health-based began Aug 1992 Resolved

Recent enforcement actions

  • State action · SOX Oct 2020
  • State action · SOX Oct 2020
  • State action · SOX Oct 2020
  • State action · SFL May 2019
  • State action · SFL May 2019
  • State action · SOX May 2019
  • State action · SOX Apr 2019
  • State action · SFL Mar 2019

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 Nov 2020

0.238 · max 0.238 mg/l as N · 2

Arsenic

1 station · latest Nov 2020

0.29 · max 0.29 ug/l · 1

Copper

1 station · latest Nov 2020

2.1 · max 2.1 ug/l · 1

Fluoride

1 station · latest Nov 2020

0.05 · max 0.05 mg/l · 1

Lead

1 station · latest Nov 2020

0.145 · max 0.145 ug/l · 1

Uranium

1 station · latest Nov 2020

0.098 · max 0.098 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 CA4710002 — 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.