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Water system · PWSID 090400394

Mishongnovi (Upper Sipaulovi/Upper Mishongnovi)

Second Mesa, AZ · ~490 people served

Check your exact address → Second Mesa overview
100
Excellent
PurityRadar safety score

PWSID

090400394

State

Arizona

City

Second Mesa

Population served

490

Primary source

GWP

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

311

Violations on record

1

Unaddressed

61

Health-based

394

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jan 2026. Official EPA record →

Other · EPA contaminant 7500 began Jul 2025 Unaddressed
Monitoring · Lead & Copper Rule began Jul 2025 Resolved
Monitoring · Lead & Copper Rule began Mar 2023 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jul 2022 Resolved
Max contaminant level (MCL) · Arsenic health-based began Apr 2022 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jan 2022 Resolved
Max contaminant level (MCL) · Arsenic health-based began Oct 2021 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jul 2021 Resolved
Max contaminant level (MCL) · Arsenic health-based began Apr 2021 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jan 2021 Resolved
Max contaminant level (MCL) · Arsenic health-based began Oct 2020 Resolved
Reporting · Lead & Copper Rule began Oct 2020 Resolved

Recent enforcement actions

  • EPA/federal action · EOX Jan 2026
  • EPA/federal action · EIA Dec 2025
  • EPA/federal action · EOX Aug 2025
  • EPA/federal action · EOX May 2023
  • EPA/federal action · EOX Oct 2022
  • EPA/federal action · EOX Oct 2022
  • EPA/federal action · EOX Oct 2022
  • EPA/federal action · EOX Oct 2022

This profile is built from EPA public records for system 090400394 — 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.