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Water system · PWSID CA4710013

LAKE SHASTINA C.S.D

WEED, CA · ~2,790 people served

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

PWSID

CA4710013

State

California

City

WEED

Population served

2,790

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

8

Violations on record

2

Unaddressed

6

Health-based

12

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Feb 2021. Official EPA record →

Reporting · EPA contaminant 5200 began Oct 2024 Unaddressed
Treatment technique · EPA contaminant 5200 health-based began Oct 2024 Unaddressed
Monitoring & reporting · Lead & Copper Rule began Jan 2018 Resolved
Max contaminant level (MCL) · Total coliform health-based began Sep 2015 Resolved
Max contaminant level (MCL) · Total coliform health-based began Aug 2010 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jan 2006 Resolved
Max contaminant level (MCL) · Total coliform health-based began Sep 2005 Resolved
Max contaminant level (MCL) · Total coliform health-based began Aug 1995 Resolved

Recent enforcement actions

  • State action · SFJ Feb 2021
  • State action · SOX Dec 2020
  • State action · SOX Jan 2019
  • State action · SIE Oct 2012
  • State action · SOX Sep 2010
  • State action · SIE Sep 2010
  • State action · SOX Feb 2006
  • State action · SIE Feb 2006

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 Oct 2020

0.479 · max 0.479 mg/l as N · 2

Arsenic

1 station · latest Oct 2020

2.9 · max 2.9 ug/l · 1

Atrazine

1 station · latest Oct 2020

0.006 · max 0.006 ug/l · 1

Copper

1 station · latest Oct 2020

4.4 · max 4.4 ug/l · 1

Fluoride

1 station · latest Oct 2020

0.36 · max 0.36 mg/l · 1

Lead

1 station · latest Oct 2020

0.367 · max 0.367 ug/l · 1

Uranium

1 station · latest Oct 2020

0.238 · max 0.238 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 CA4710013 — 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.