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Water system · PWSID AZ0402345

NACO ESTATES

SIERRA VISTA, AZ · ~75 people served

Check your exact address → SIERRA VISTA overview
100
Excellent
PurityRadar safety score

PWSID

AZ0402345

State

Arizona

City

SIERRA VISTA

Population served

75

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

25

Violations on record

2

Unaddressed

3

Health-based

44

Enforcement actions

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

Other · EPA contaminant 7000 began Oct 2025 Unaddressed
Other · EPA contaminant 7000 began Jul 2025 Unaddressed
Other · EPA contaminant 7500 began Dec 2024 Resolved
Monitoring & reporting · EPA contaminant 3014 began Dec 2024 Resolved
Reporting · EPA contaminant 5200 began Oct 2024 Resolved
Treatment technique · EPA contaminant 5200 health-based began Oct 2024 Resolved
Treatment technique · Lead & Copper Rule health-based began Sep 2024 Resolved
Monitoring & reporting · EPA contaminant 3014 began Jul 2024 Resolved
Other · EPA contaminant 7000 began Oct 2022 Resolved
Treatment technique · Lead & Copper Rule health-based began Sep 2022 Resolved
Other · EPA contaminant 7000 began Jul 2022 Resolved
Reporting · Lead & Copper Rule began Nov 2020 Resolved

Recent enforcement actions

  • State action · SIA Nov 2025
  • State action · SIA Nov 2025
  • State action · SOX Mar 2025
  • State action · SIF Jan 2025
  • State action · SOX Jan 2025
  • State action · SIF Jan 2025
  • State action · SIA Jan 2025
  • State action · SIE Jan 2025

This profile is built from EPA public records for system AZ0402345 — 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.