YARNELL WATER IMPROVEMENT ASSOCIATION

PRESCOTT, AZ · ~515 people served

Check your exact address → PRESCOTT overview

100

Excellent

PurityRadar safety score

PWSID

AZ0413057

State

Arizona

City

PRESCOTT

Population served

515

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

112

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Oct 2023. Official EPA record →

Other · EPA contaminant 7000 began Oct 2023 Resolved

Reporting · Lead & Copper Rule began Oct 2022 Resolved

Monitoring & reporting · EPA contaminant 0999 began Jan 2022 Resolved

Monitoring & reporting · Lead & Copper Rule began Oct 2021 Resolved

Monitoring & reporting · EPA contaminant 0999 began Apr 2021 Resolved

Other · EPA contaminant 7500 began Jan 2020 Resolved

Monitoring & reporting · Lead & Copper Rule began Jan 2019 Resolved

Other · EPA contaminant 7000 began Jul 2018 Resolved

Monitoring & reporting · Lead & Copper Rule began Oct 2017 Resolved

Monitoring & reporting · EPA contaminant 0999 began Apr 2017 Resolved

Monitoring · Lead & Copper Rule began Oct 2016 Resolved

Monitoring & reporting · EPA contaminant 0999 began Oct 2016 Resolved

Recent enforcement actions

State action · SOX Oct 2023
State action · SIA Oct 2023
State action · SOX Mar 2023
State action · SOX Mar 2023
State action · SIE Dec 2022
State action · SIA Dec 2022
State action · SOX Nov 2022
State action · SOX May 2022

This profile is built from EPA public records for system AZ0413057 — 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.