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Water system · PWSID CA4710010

TULELAKE, CITY OF

TULELAKE, CA · ~856 people served

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

PWSID

CA4710010

State

California

City

TULELAKE

Population served

856

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

6

Violations on record

3

Unaddressed

2

Health-based

6

Enforcement actions

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

Reporting · EPA contaminant 5200 began Jul 2025 Unaddressed
Reporting · EPA contaminant 5200 began Oct 2024 Unaddressed
Treatment technique · EPA contaminant 5200 health-based began Oct 2024 Unaddressed
Monitoring & reporting · Total coliform began Sep 2013 Resolved
Max contaminant level (MCL) · Total coliform health-based began Sep 2010 Resolved
Monitoring & reporting · Lead & Copper Rule began Jul 1993 Resolved

Recent enforcement actions

  • State action · SFL Dec 2025
  • State action · SOX Oct 2013
  • State action · SIE Oct 2013
  • State action · SOX Oct 2010
  • State action · SIE Oct 2010
  • EPA/federal action · EOX Dec 2003

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

0.121 · max 0.121 mg/l as N · 2

Arsenic

1 station · latest Nov 2020

9.7 · max 9.7 ug/l · 1

Copper

1 station · latest Nov 2020

0.71 · max 0.71 ug/l · 1

Fluoride

1 station · latest Nov 2020

0.34 · max 0.34 mg/l · 1

Lead

1 station · latest Nov 2020

0.744 · max 0.744 ug/l · 1

Manganese

1 station · latest Nov 2020

71.4 · max 71.4 ug/l · 1

Uranium

1 station · latest Nov 2020

0.624 · max 0.624 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 CA4710010 — 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.