CALIFORNIA STATE PRISON - SOLANO

VACAVILLE, CA · ~5,100 people served

Check your exact address → VACAVILLE overview

100

Excellent

PurityRadar safety score

PWSID

CA4810800

State

California

City

VACAVILLE

Population served

5,100

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

Latest detections from EPA’s UCMR5 monitoring (through Apr 2023). Levels in parts per trillion (ppt).

Lithium

11,000 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

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

Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jul 2017 Resolved

Max contaminant level (MCL) · Total coliform health-based began Mar 2000 Resolved

Max contaminant level (MCL) · Total coliform health-based began Feb 1999 Resolved

Treatment technique · EPA contaminant 0200 health-based began Jun 1995 Resolved

Recent enforcement actions

State action · SOX Mar 2021
State action · SOX Feb 2018
State action · SFL Dec 2017
State action · SOX Apr 2000
State action · SIA Mar 2000
State action · SOX Mar 1999
State action · SIA Mar 1999
State action · SOX Jun 1995

This profile is built from EPA public records for system CA4810800 — 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.