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Water system · PWSID CA4710008

MT. SHASTA, CITY OF

MT. SHASTA, CA · ~3,642 people served

Check your exact address → MT. SHASTA overview
85
Excellent
PurityRadar safety score

PWSID

CA4710008

State

California

City

MT. SHASTA

Population served

3,642

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

13

Violations on record

2

Unaddressed

11

Health-based

23

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Oct 2021. 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 Sep 2019 Resolved
Max contaminant level (MCL) · Lead & Copper Rule health-based began Jul 2017 Resolved
Max contaminant level (MCL) · Lead & Copper Rule health-based began Jul 2017 Resolved
Max contaminant level (MCL) · Lead & Copper Rule health-based began Jun 2017 Resolved
Max contaminant level (MCL) · Total coliform health-based began Mar 2016 Resolved
Max contaminant level (MCL) · Total coliform health-based began Oct 2015 Resolved
Max contaminant level (MCL) · Total coliform health-based began May 2015 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jan 2015 Resolved
Max contaminant level (MCL) · Total coliform health-based began Nov 2014 Resolved
Max contaminant level (MCL) · Total coliform health-based began Aug 2014 Resolved

Recent enforcement actions

  • State action · SFL Oct 2021
  • State action · SOX Oct 2019
  • State action · SFL Oct 2019
  • State action · SOX Apr 2018
  • State action · SOX Mar 2018
  • State action · SOX Feb 2018
  • State action · SOX Feb 2018
  • State action · SFL Aug 2017

This profile is built from EPA public records for system CA4710008 — 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.