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Water system · PWSID ID4200054

MOUNTAIN HOME AIR FORCE BASE

MOUNTAIN HOME AFB, ID · ~7,500 people served

Check your exact address → MOUNTAIN HOME AFB overview
92
Excellent
PurityRadar safety score

PWSID

ID4200054

State

Idaho

City

MOUNTAIN HOME AFB

Population served

7,500

Primary source

Groundwater

Score history

▼ 8 points — the score moved from 100 to 92 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 92

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 Oct 2023). Levels in parts per trillion (ppt).

PFHxS

Perfluorohexanesulfonic acid

10 ppt

limit 10 ppt

Near EPA limit

PFHxA

13 ppt

limit —

No federal limit

PFPeA

6.7 ppt

limit —

No federal limit

PFBS

4.8 ppt

limit —

No federal limit

Violations & enforcement

161

Violations on record

1

Unaddressed

16

Health-based

105

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Nov 2024. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Dec 2025 Unaddressed
Monitoring · Lead & Copper Rule began Aug 2024 Resolved
Monitoring & reporting · EPA contaminant 0999 began Aug 2024 Resolved
Monitoring · Lead & Copper Rule began Mar 2022 Resolved
Monitoring & reporting · EPA contaminant 0999 began Jan 2022 Resolved
Monitoring & reporting · EPA contaminant 3014 began Nov 2021 Resolved
Monitoring & reporting · EPA contaminant 2032 began Oct 2021 Resolved
Monitoring & reporting · EPA contaminant 2020 began Oct 2021 Resolved
Monitoring & reporting · EPA contaminant 2033 began Oct 2021 Resolved
Monitoring & reporting · EPA contaminant 2010 began Oct 2021 Resolved
Monitoring & reporting · EPA contaminant 2005 began Oct 2021 Resolved
Monitoring & reporting · EPA contaminant 2034 began Oct 2021 Resolved

Recent enforcement actions

  • State action · SIE Nov 2024
  • State action · SIA Nov 2024
  • State action · SIE Oct 2024
  • State action · SIA Oct 2024
  • State action · SOX Sep 2024
  • State action · SOX Jan 2024
  • State action · SOX Feb 2023
  • State action · SOX Feb 2023

This profile is built from EPA public records for system ID4200054 — 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.