GW OCOTILLO WATER - SIERRITA FOOTHILLS

MARICOPA, AZ · ~84 people served

Check your exact address → MARICOPA overview

100

Excellent

PurityRadar safety score

PWSID

AZ0410270

State

Arizona

City

MARICOPA

Population served

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

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

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Oct 2007. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Oct 2006 Resolved

Other · EPA contaminant 7000 began Jul 2006 Resolved

Other · EPA contaminant 7000 began Jul 2005 Resolved

Monitoring & reporting · EPA contaminant 0999 began Oct 2004 Resolved

Other · EPA contaminant 7000 began Jul 2004 Resolved

Other · EPA contaminant 7000 began Jul 2003 Resolved

Other · EPA contaminant 7000 began Jul 2002 Resolved

Monitoring & reporting · EPA contaminant 2955 began Jan 2002 Resolved

Monitoring & reporting · Nitrate began Jan 1999 Resolved

Monitoring & reporting · Total coliform began Dec 1998 Resolved

Monitoring & reporting · EPA contaminant 2378 began Jan 1998 Resolved

Monitoring & reporting · EPA contaminant 2968 began Jan 1998 Resolved

Recent enforcement actions

State action · SOX Oct 2007
State action · SOX Jul 2006
State action · SOX Jul 2005
State action · SOX Apr 2005
State action · SOX Apr 2004
State action · SOX Apr 2003
State action · SOX Apr 2003
State action · SOX Apr 2002

This profile is built from EPA public records for system AZ0410270 — 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.