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Water system · PWSID AZ0410051

FLOWING WELLS IRRIGATION DISTRICT

TUCSON, AZ · ~16,000 people served

Check your exact address → TUCSON overview
73
Good
PurityRadar safety score

PWSID

AZ0410051

State

Arizona

City

TUCSON

Population served

16,000

Primary source

Groundwater

Score history

▼ 27 points — the score moved from 100 to 73 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 73

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

PFOA

Perfluorooctanoic acid

5 ppt

limit 4 ppt

Above EPA limit · 1.3×

PFOS

Perfluorooctanesulfonic acid

4 ppt

limit 4 ppt

Near EPA limit

PFHxS

Perfluorohexanesulfonic acid

5 ppt

limit 10 ppt

Near EPA limit

Lithium

108,000 ppt

limit —

No federal limit

PFBS

4 ppt

limit —

No federal limit

PFHxA

3 ppt

limit —

No federal limit

PFPeA

3 ppt

limit —

No federal limit

Violations & enforcement

786

Violations on record

0

Unaddressed

2

Health-based

177

Enforcement actions

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

Monitoring & reporting · EPA contaminant 2981 began Jul 2025 Resolved
Monitoring & reporting · EPA contaminant 2968 began Jul 2025 Resolved
Monitoring & reporting · EPA contaminant 2977 began Jul 2025 Resolved
Monitoring & reporting · EPA contaminant 2980 began Jul 2025 Resolved
Monitoring & reporting · EPA contaminant 2380 began Jul 2025 Resolved
Monitoring & reporting · EPA contaminant 2964 began Jul 2025 Resolved
Monitoring & reporting · EPA contaminant 2955 began Jul 2025 Resolved
Monitoring & reporting · EPA contaminant 2976 began Jul 2025 Resolved
Monitoring & reporting · EPA contaminant 2969 began Jul 2025 Resolved
Monitoring & reporting · EPA contaminant 2979 began Jul 2025 Resolved
Monitoring & reporting · EPA contaminant 2378 began Jul 2025 Resolved
Monitoring & reporting · EPA contaminant 2982 began Jul 2025 Resolved

Recent enforcement actions

  • State action · SIE Dec 2025
  • State action · SOX Nov 2025
  • State action · SIA Nov 2025
  • State action · SIA Nov 2025
  • State action · SIE Nov 2025
  • State action · SIE Nov 2025
  • State action · SOX Jun 2025
  • State action · SIA Jun 2025

This profile is built from EPA public records for system AZ0410051 — 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.