Home/ Directory/ AZ/ GRAHAM COUNTY UTILITIES - PIMA

Water system · PWSID AZ0405002

GRAHAM COUNTY UTILITIES - PIMA

PIMA, AZ · ~3,799 people served

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

PWSID

AZ0405002

State

Arizona

City

PIMA

Population served

3,799

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

72

Violations on record

1

Unaddressed

5

Health-based

122

Enforcement actions

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

Monitoring & reporting · Lead & Copper Rule began Oct 2021 Unaddressed
Other · EPA contaminant 7000 began Oct 2025 Resolved
Other · EPA contaminant 7000 began Jul 2025 Resolved
Treatment technique · EPA contaminant 0700 health-based began Feb 2025 Resolved
Other · EPA contaminant 7500 began Apr 2023 Resolved
Treatment technique · EPA contaminant 0700 health-based began Jul 2022 Resolved
Treatment technique · EPA contaminant 0700 health-based began Jul 2022 Resolved
Treatment technique · EPA contaminant 0700 health-based began Jun 2022 Resolved
Treatment technique · EPA contaminant 0700 health-based began Mar 2022 Resolved
Other · EPA contaminant 7500 began Feb 2022 Resolved
Monitoring & reporting · EPA contaminant 0999 began Jan 2022 Resolved
Other · EPA contaminant 7500 began Nov 2021 Resolved

Recent enforcement actions

  • State action · SOX Oct 2025
  • State action · SOX Oct 2025
  • State action · SIA Oct 2025
  • State action · SIA Oct 2025
  • State action · SOX Jun 2025
  • State action · SOX Mar 2025
  • State action · SIE Mar 2025
  • State action · SIA Mar 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

Copper

1 station · latest May 2024

0.012 · max 0.071 mg/L · 9

Arsenic

1 station · latest May 2024

0.0066 · max 0.0097 mg/L · 8

Fluoride

1 station · latest Dec 2023

2.41 · max 2.96 mg/l · 7

Manganese

1 station · latest May 2024

0.19 · max 0.48 mg/L · 5

Lead

1 station · latest Nov 2023

0.0069 · max 0.012 mg/L · 4

Nitrate

1 station · latest Sep 2023

1.22 · max 1.22 mg/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 AZ0405002 — 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.