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Water system · PWSID AZ0413025

COTTONWOOD MUNICIPAL WATER CW1

COTTONWOOD, AZ · ~11,023 people served

Check your exact address → COTTONWOOD overview
100
Excellent
PurityRadar safety score

PWSID

AZ0413025

State

Arizona

City

COTTONWOOD

Population served

11,023

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 Sep 2025). Levels in parts per trillion (ppt).

Lithium

51,500 ppt

limit —

No federal limit

PFPeA

3.2 ppt

limit —

No federal limit

Violations & enforcement

187

Violations on record

0

Unaddressed

37

Health-based

162

Enforcement actions

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

Max contaminant level (MCL) · Arsenic health-based began Apr 2021 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jan 2021 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jan 2021 Resolved
Max contaminant level (MCL) · Arsenic health-based began Oct 2020 Resolved
Monitoring & reporting · Arsenic began Jan 2018 Resolved
Monitoring & reporting · Arsenic began Jan 2018 Resolved
Monitoring & reporting · Arsenic began Jan 2018 Resolved
Monitoring & reporting · Arsenic began Jan 2018 Resolved
Reporting · Lead & Copper Rule began Oct 2017 Resolved
Reporting · Lead & Copper Rule began Dec 2016 Resolved
Monitoring & reporting · EPA contaminant 0999 began Oct 2015 Resolved
Other · EPA contaminant 7000 began Jul 2015 Resolved

Recent enforcement actions

  • State action · SOX Oct 2021
  • State action · SIE Oct 2021
  • State action · SIA Oct 2021
  • State action · SIF Oct 2021
  • State action · SOX Oct 2021
  • State action · SIE Mar 2021
  • State action · SIE Mar 2021
  • State action · SIA Mar 2021

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

Nitrate

10 stations · latest Dec 2021

12.7 · max 33 mg/L · 21

Copper

2 stations · latest Mar 2022

0.00395 · max 0.0044 mg/L · 2

Manganese

2 stations · latest Mar 2022

0.0444 · max 0.079 mg/L · 2

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 AZ0413025 — 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.