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Water system · PWSID AZ0410011

RIO VIEJO WATER

100
Excellent
PurityRadar safety score

PWSID

AZ0410011

State

Arizona

City

TUCSON

Population served

272

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

5

Violations on record

0

Unaddressed

0

Health-based

14

Enforcement actions

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

Other · EPA contaminant 7500 began Feb 2025 Resolved
Other · EPA contaminant 7500 began Feb 2023 Resolved
Monitoring & reporting · Arsenic began Jan 2023 Resolved
Reporting · Lead & Copper Rule began Dec 2021 Resolved
Monitoring & reporting · Arsenic began Jan 2021 Resolved

Recent enforcement actions

  • State action · SOX Apr 2025
  • State action · SIF Apr 2025
  • State action · SIA Apr 2025
  • State action · SOX Apr 2024
  • State action · SIA Feb 2024
  • State action · SIE Feb 2024
  • State action · SOX Mar 2023
  • State action · SIA Mar 2023

This profile is built from EPA public records for system AZ0410011 — 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.