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Water system · PWSID AZ0411018

MAMMOTH TOWN OF

MAMMOTH, AZ · ~1,181 people served

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

PWSID

AZ0411018

State

Arizona

City

MAMMOTH

Population served

1,181

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

90

Violations on record

1

Unaddressed

0

Health-based

109

Enforcement actions

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

Reporting · EPA contaminant 5200 began Jul 2025 Unaddressed
Other · EPA contaminant 7500 began Nov 2025 Resolved
Other · EPA contaminant 7500 began Nov 2025 Resolved
Other · EPA contaminant 7000 began Oct 2025 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jul 2024 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Jul 2024 Resolved
Monitoring & reporting · EPA contaminant 0999 began Jun 2024 Resolved
Other · EPA contaminant 7000 began Oct 2023 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Jul 2023 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jul 2023 Resolved
Other · EPA contaminant 7000 began Oct 2021 Resolved
Reporting · Lead & Copper Rule began Apr 2017 Resolved

Recent enforcement actions

  • State action · SOX Dec 2025
  • State action · SOX Dec 2025
  • State action · SOX Oct 2025
  • State action · SIA Oct 2025
  • State action · SOX Aug 2025
  • State action · SOX Aug 2025
  • State action · SIA Nov 2024
  • State action · SIE Nov 2024

This profile is built from EPA public records for system AZ0411018 — 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.