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Water system · PWSID CA1810001

CITY OF SUSANVILLE

SUSANVILLE, CA · ~7,811 people served

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

PWSID

CA1810001

State

California

City

SUSANVILLE

Population served

7,811

Primary source

Groundwater

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

Latest detections from EPA’s UCMR5 monitoring (through Aug 2024). Levels in parts per trillion (ppt).

Lithium

23,900 ppt

limit —

No federal limit

Violations & enforcement

4

Violations on record

0

Unaddressed

4

Health-based

10

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Oct 2003. Official EPA record →

Max contaminant level (MCL) · Total coliform health-based began Jul 2003 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jun 2003 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jul 2002 Resolved
Max contaminant level (MCL) · Total coliform health-based began Sep 2001 Resolved

Recent enforcement actions

  • State action · SIA Oct 2003
  • State action · SOX Aug 2003
  • State action · SOX Jul 2003
  • State action · SIA Oct 2002
  • State action · SOX Aug 2002
  • State action · SIA Nov 2001
  • State action · SOX Oct 2001
  • EPA/federal action · EOX Mar 2000

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

2 stations · latest Jun 2025

0.4 · max 0.56 mg/L · 7

Arsenic

2 stations · latest Jun 2023

0.0054 · max 0.014 mg/L · 4

Lead

1 station · latest Jun 2023

0.011 · max 0.011 mg/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 CA1810001 — 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.