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Water system · PWSID 090605150

Susanville Upper Rancheria

Susanville, CA · ~190 people served

Check your exact address → Susanville overview
100
Excellent
PurityRadar safety score

PWSID

090605150

State

California

City

Susanville

Population served

190

Primary source

GWP

Score history

No change since tracking began Jun 18, 2026.

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

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

14

Violations on record

0

Unaddressed

0

Health-based

34

Enforcement actions

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

Reporting · EPA contaminant 5200 began Oct 2024 Resolved
Monitoring & reporting · EPA contaminant 0999 began Apr 2024 Resolved
Monitoring · Lead & Copper Rule began Oct 2022 Resolved
Monitoring & reporting · EPA contaminant 0999 began Oct 2022 Resolved
Monitoring & reporting · EPA contaminant 0999 began Oct 2021 Resolved
Monitoring · Lead & Copper Rule began Nov 2020 Resolved
Other · EPA contaminant 7000 began Jul 2020 Resolved
Monitoring · Lead & Copper Rule began Oct 2019 Resolved
Other · EPA contaminant 7500 began Oct 2019 Resolved
Other · EPA contaminant 7000 began Jul 2013 Resolved
Other · EPA contaminant 7000 began Jul 2012 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2011 Resolved

Recent enforcement actions

  • EPA/federal action · EIA Apr 2025
  • EPA/federal action · EIA Apr 2025
  • EPA/federal action · EOX Nov 2024
  • EPA/federal action · EOX Jun 2024
  • EPA/federal action · EOX Dec 2022
  • EPA/federal action · EOX Jan 2022
  • EPA/federal action · EOX Jan 2021
  • EPA/federal action · EOX Dec 2020

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

0.275 · max 0.275 mg/l as N · 2

Arsenic

1 station · latest Oct 2020

8.2 · max 8.2 ug/l · 1

Copper

1 station · latest Oct 2020

0.97 · max 0.97 ug/l · 1

Fluoride

1 station · latest Oct 2020

0.24 · max 0.24 mg/l · 1

Lead

1 station · latest Oct 2020

0.036 · max 0.036 ug/l · 1

Manganese

1 station · latest Oct 2020

1.84 · max 1.84 ug/l · 1

Uranium

1 station · latest Oct 2020

0.334 · max 0.334 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 090605150 — 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.