AMERICAN VALLEY CSD

QUINCY, CA · ~3,778 people served

Check your exact address → QUINCY overview

100

Excellent

PurityRadar safety score

PWSID

CA3210004

State

California

City

QUINCY

Population served

3,778

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 Nov 2024). Levels in parts per trillion (ppt).

PFPeA

3.8 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Oct 2019. Official EPA record →

Reporting · EPA contaminant 5200 began Jul 2025 Unaddressed

Max contaminant level (MCL) · Lead & Copper Rule health-based began Sep 2019 Resolved

Max contaminant level (MCL) · Lead & Copper Rule health-based began Jun 2019 Resolved

Max contaminant level (MCL) · Total coliform health-based began Dec 2012 Resolved

Max contaminant level (MCL) · Total coliform health-based began Nov 2009 Resolved

Monitoring & reporting · Total coliform began Jun 2007 Resolved

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

Recent enforcement actions

State action · SFL Oct 2019
State action · SOX Sep 2019
State action · SFH Sep 2019
State action · SFL Jul 2019
State action · SOX Jun 2019
State action · SFH Jun 2019
State action · SFL Mar 2013
State action · SOX Jan 2013

This profile is built from EPA public records for system CA3210004 — 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.