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Water system · PWSID AZ0413020

COLDWATER CANYON 1

TUCSON, AZ · ~541 people served

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

PWSID

AZ0413020

State

Arizona

City

TUCSON

Population served

541

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

152

Violations on record

0

Unaddressed

9

Health-based

112

Enforcement actions

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

Monitoring & reporting · Arsenic began Jul 2025 Resolved
Max contaminant level (MCL) · Arsenic health-based began Apr 2023 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jan 2023 Resolved
Other · EPA contaminant 7500 began Nov 2022 Resolved
Max contaminant level (MCL) · Arsenic health-based began Oct 2022 Resolved
Monitoring & reporting · EPA contaminant 0999 began Oct 2022 Resolved
Other · EPA contaminant 7000 began Jul 2022 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jul 2022 Resolved
Monitoring & reporting · EPA contaminant 0999 began Apr 2022 Resolved
Monitoring & reporting · EPA contaminant 0999 began Apr 2020 Resolved
Monitoring & reporting · Lead & Copper Rule began Oct 2019 Resolved
Monitoring & reporting · Arsenic began Oct 2019 Resolved

Recent enforcement actions

  • State action · SOX Dec 2025
  • State action · SIE Oct 2025
  • State action · SIA Oct 2025
  • State action · SOX Sep 2023
  • State action · SIF Jun 2023
  • State action · SIF Jun 2023
  • State action · SIA May 2023
  • State action · SIE May 2023

This profile is built from EPA public records for system AZ0413020 — 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.