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Water system · PWSID AZ0410076

METROPOLITAN DWID

TUCSON, AZ · ~45,570 people served

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

PWSID

AZ0410076

State

Arizona

City

TUCSON

Population served

45,570

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

PFHxS

Perfluorohexanesulfonic acid

3.7 ppt

limit 10 ppt

Below EPA limit

Lithium

13,100 ppt

limit —

No federal limit

PFBS

4.8 ppt

limit —

No federal limit

Violations & enforcement

789

Violations on record

1

Unaddressed

7

Health-based

567

Enforcement actions

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

Other · EPA contaminant 7000 began Jul 2002 Unaddressed
Monitoring & reporting · EPA contaminant 2980 began Oct 2024 Resolved
Monitoring & reporting · EPA contaminant 2955 began Oct 2024 Resolved
Monitoring & reporting · EPA contaminant 2969 began Oct 2024 Resolved
Monitoring & reporting · EPA contaminant 2979 began Oct 2024 Resolved
Monitoring & reporting · EPA contaminant 2976 began Oct 2024 Resolved
Monitoring & reporting · EPA contaminant 2378 began Oct 2024 Resolved
Monitoring & reporting · EPA contaminant 2380 began Oct 2024 Resolved
Monitoring & reporting · EPA contaminant 2964 began Oct 2024 Resolved
Monitoring & reporting · EPA contaminant 2968 began Oct 2024 Resolved
Monitoring & reporting · EPA contaminant 2977 began Oct 2024 Resolved
Monitoring & reporting · EPA contaminant 2981 began Oct 2024 Resolved

Recent enforcement actions

  • State action · SIA Jan 2025
  • State action · SOX Jan 2025
  • State action · SIA Jan 2025
  • State action · SIA Nov 2024
  • State action · SIA Nov 2024
  • State action · SOX Nov 2024
  • State action · SOX Aug 2023
  • State action · SIA Aug 2023

This profile is built from EPA public records for system AZ0410076 — 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.