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Water system · PWSID CA5810005

NEVADA ID - SMARTSVILLE

GRASS VALLEY, CA · ~122 people served

Check your exact address → GRASS VALLEY overview
100
Excellent
PurityRadar safety score

PWSID

CA5810005

State

California

City

GRASS VALLEY

Population served

122

Primary source

Surface water

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

2

Violations on record

0

Unaddressed

2

Health-based

4

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Apr 2011. Official EPA record →

Max contaminant level (MCL) · Haloacetic acids (HAA5) health-based began Oct 2010 Resolved
Treatment technique · EPA contaminant 0200 health-based began Jun 1993 Resolved

Recent enforcement actions

  • State action · SOX Apr 2011
  • State action · SFJ Jan 2011
  • State action · SOX Jan 1997
  • State action · SFL Aug 1993

This profile is built from EPA public records for system CA5810005 — 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.