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Water system · PWSID AZ0413045

PRESCOTT CITY OF

PRESCOTT, AZ · ~42,217 people served

Check your exact address → PRESCOTT overview
34
Action needed
PurityRadar safety score

PWSID

AZ0413045

State

Arizona

City

PRESCOTT

Population served

42,217

Primary source

Groundwater

Score history

▼ 66 points — the score moved from 100 to 34 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 34

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 2023). Levels in parts per trillion (ppt).

PFOA

Perfluorooctanoic acid

11 ppt

limit 4 ppt

Above EPA limit · 2.9×

PFOS

Perfluorooctanesulfonic acid

8.7 ppt

limit 4 ppt

Above EPA limit · 2.2×

PFHxS

Perfluorohexanesulfonic acid

4.9 ppt

limit 10 ppt

Below EPA limit

Lithium

12,500 ppt

limit —

No federal limit

PFBS

7.5 ppt

limit —

No federal limit

PFPeA

3.8 ppt

limit —

No federal limit

PFHpA

3.6 ppt

limit —

No federal limit

PFHxA

3.5 ppt

limit —

No federal limit

Violations & enforcement

400

Violations on record

1

Unaddressed

1

Health-based

194

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Nov 2025. Official EPA record →

Reporting · EPA contaminant 5200 began Jul 2025 Unaddressed
Monitoring & reporting · Arsenic began Apr 2025 Resolved
Monitoring & reporting · Arsenic began Apr 2025 Resolved
Other · EPA contaminant 7500 began Mar 2025 Resolved
Treatment technique · EPA contaminant 0700 health-based began Jan 2025 Resolved
Monitoring & reporting · Arsenic began Apr 2024 Resolved
Monitoring & reporting · Arsenic began Apr 2024 Resolved
Monitoring & reporting · EPA contaminant 2968 began Jul 2022 Resolved
Monitoring & reporting · EPA contaminant 2964 began Jul 2022 Resolved
Monitoring & reporting · EPA contaminant 2969 began Jul 2022 Resolved
Monitoring & reporting · EPA contaminant 2955 began Jul 2022 Resolved
Monitoring & reporting · EPA contaminant 4020 began Jul 2022 Resolved

Recent enforcement actions

  • State action · SOX Nov 2025
  • State action · SOX Nov 2025
  • State action · SIA Jul 2025
  • State action · SOX Jul 2025
  • State action · SOX Jul 2025
  • State action · SIA Jul 2025
  • State action · SIF Jul 2025
  • State action · SIA Apr 2025

Area water-quality monitoring

Environmental monitoring (rivers, wells, intakes) recorded in this system’s service area in the EPA/USGS Water Quality Portal since 2018 — source/ambient water, not finished tap water. Context for the watershed, not a reading from your tap.

ContaminantMedian · max · samples

Arsenic

10 stations · latest Jun 2025

0.0037 · max 0.031 mg/L · 47

Nitrate

19 stations · latest Apr 2025

0.94 · max 15 mg/L · 29

Copper

12 stations · latest Dec 2025

0.01 · max 0.042 mg/L · 26

Manganese

9 stations · latest Jun 2025

0.145 · max 6.4 mg/L · 24

Lead

6 stations · latest Mar 2022

0.001 · max 0.008 mg/L · 14

Fluoride

9 stations · latest May 2024

0.46 · max 0.7 mg/L · 12

Uranium

1 station · latest Jan 2024

1.4 · max 1.4 ug/L · 1

Source: Water Quality Portal (EPA/USGS/state agencies). Values are as-reported and aren’t health thresholds.

This profile is built from EPA public records for system AZ0413045 — 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.