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Water system · PWSID 090400088

Fort McDowell Community

Fountain Hills, AZ · ~7,260 people served

Check your exact address → Fountain Hills overview
100
Excellent
PurityRadar safety score

PWSID

090400088

State

Arizona

City

Fountain Hills

Population served

7,260

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

Latest detections from EPA’s UCMR5 monitoring (through Jun 2025). Levels in parts per trillion (ppt).

Lithium

40,900 ppt

limit —

No federal limit

Violations & enforcement

77

Violations on record

0

Unaddressed

12

Health-based

168

Enforcement actions

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

Monitoring & reporting · Arsenic began Jul 2025 Resolved
Monitoring & reporting · Nitrate began Jul 2025 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jan 2025 Resolved
Other · EPA contaminant 7500 began Oct 2024 Resolved
Max contaminant level (MCL) · Arsenic health-based began Oct 2024 Resolved
Other · EPA contaminant 7500 began Oct 2022 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jul 2022 Resolved
Reporting · Lead & Copper Rule began Jan 2022 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jul 2019 Resolved
Monitoring & reporting · EPA contaminant 2032 began Jan 2017 Resolved
Monitoring & reporting · EPA contaminant 2034 began Jan 2017 Resolved
Monitoring & reporting · EPA contaminant 2036 began Jan 2017 Resolved

Recent enforcement actions

  • EPA/federal action · EOX Dec 2025
  • EPA/federal action · EIA Dec 2025
  • EPA/federal action · EOX Jun 2025
  • EPA/federal action · EIA Jun 2025
  • EPA/federal action · EIA Jun 2025
  • EPA/federal action · EIA Apr 2025
  • EPA/federal action · EIA Apr 2025
  • EPA/federal action · EOX Jan 2025

This profile is built from EPA public records for system 090400088 — 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.