Historical Compliance Records ID 1 HEALTH-BASED VIOLATION ON RECORD

Mountain Home Air Force Base

EPA ID: ID4200054 ยท 7,500 people served ยท 1 ZIP code

ZipCheckup's reading of EPA records for Mountain Home Air Force Base (ID4200054): 1 health-based violation recorded since 2021. While 111 violations did appear in Mountain Home Air Force Base's monitoring record, none is listed as unresolved; the utility serves approximately 7,500 residents. A closed violation record does not by itself establish compliance with every current EPA standard.

Data: EPA SDWIS

C ยท 67
Avg Safety Score
7,500
People Served
1
ZIP Code Served
111
Violations (since 2021)
Groundwater
Water Source
Below the reporting limit
Most recent lead 90th percentile on record (monitoring period ending 2025-12-31)
Zone 1
County Radon Potential ยท High
59
Contaminants Flagged

Service Area Map

Coverage area for Mountain Home Air Force Base Source: EPA SDWIS service area boundaries.

Service area boundary - average Home Safety grade of mapped ZIPs: C

Demographics of ZIP Codes Served

$72,411
Median Household Income
3,198
Population of ZIP Codes Served (Census)
7%
Disadvantaged Population
40th
Poverty Percentile
20th
Energy Burden Percentile
4%
Pre-1986 Housing

The ZIP codes associated with Mountain Home Air Force Base have a median household income of $72,411 and about 3,198 residents live in those ZIP codes (Census; not the number of people this system supplies).

๐Ÿ’ง Where Does Your Water Come From?

Groundwater

Mountain Home Air Force Base's water is classified in EPA records as a groundwater source. Groundwater is naturally filtered through rock and soil, but it can be vulnerable to PFAS contamination, nitrates from agriculture, and industrial chemicals that seep into the water table.

Elevated Risk
Source Contamination Risk
60th
Wastewater Discharge Proximity
10th
Superfund Site Proximity

Wastewater Proximity Note: This service area ranks in the 60th percentile nationally for proximity to wastewater discharge points.

Infrastructure Risk

23 yr
Estimated pipe age (modeled from housing age)
PEX or Copper
Likely pipe material (modeled)
42 yr
Est. Remaining Life
Stable
Decay Status
Installed 35% of expected lifespan used (estimate) End of life

PFAS in ZIP Codes This System Serves

PFAS ("forever chemicals") have been reported in samples from water systems associated with the ZIP codes in this system's area. These results can come from other water systems serving the same ZIP codes; check the UCMR5 section for any results reported for this system. 4 detections recorded.

Health concern: Exposure to certain PFAS has been associated with some cancers and with immune and developmental effects; effects differ by compound. Many PFAS break down very slowly in the environment.
Recommended filter: An activated carbon filter certified under NSF/ANSI 53 or a reverse osmosis system certified under NSF/ANSI 58 for the PFAS listed in its certification. Find the right filter โ†’

Comparable Water Systems

Similar-sized systems in Idaho

City of Fruitland
7,458 people
34 violations
Hailey Water and Sewer
8,000 people
C 1 violation
City of Payette
8,127 people
1 violation
City of Emmett
6,700 people
0 violations
0 violations

Estimated Remediation Costs

Average estimated costs across ZIP codes served by this system

PFAS Treatment Water Filtration
PFAS Treatment $500
Water Filtration $300
Total Estimated Cost $800

Based on national averages for common remediation projects. Actual costs vary by property. Only issues flagged by EPA, FEMA, or state data for each ZIP code are included.

Cost of Inaction

Illustrative per-household cost scenario based on stated assumptions:

Estimated Healthcare Costs $1,500

Annual per household (ZipCheckup estimate)

PFAS Exposure - Lifetime Cost $1,000

Per person (emerging research est.)

Estimated Cumulative Cost Per Household

5 years
$7,665
10 years
$15,330
20 years
$30,660

Compare: Estimated remediation cost is $800 (one-time) vs. $15,330 in estimated inaction costs over 10 years.

Individual costs vary by household size, property, and health factors. These estimates are for awareness, not financial advice.

System Overview

Mountain Home Air Force Base (EPA ID: ID4200054) is a community water system in Idaho that serves approximately 7,500 people from groundwater sources.

This system serves ZIP code 83648 in Mountain Home A F B.

ZIP-Area Home Safety Context: C (67/100)

This is the average Home Safety Score for 1 of 1 service-area ZIP codes with all required score domains observed. It is not a grade for the water utility.

Model 4.0.0 uses SDWIS identity plus accepted ECHO SDWA lifecycle-based water compliance, the UCMR 5 PFAS MCL screen, EPA radon zone, and annual EPA AirData AQI across three equally weighted domains. Missing required evidence suppresses the score.

Violation History

No current noncompliance in the accepted 2026Q2 snapshot. The 111 records in the 2021-2026 window are classified as resolved or archived, not current.

Status breakdown for accepted records with record years 2021-2026: 111 resolved, 0 archived, 0 addressed, and 0 unaddressed. Under this source contract, current noncompliance is the sum of addressed and unaddressed records. Archived and resolved records are excluded from current noncompliance.

Recent Violations

Date Contaminant Type Status
December 30, 2025 Lead and Copper Rule Non-health-based Resolved
August 1, 2024 Revised Total Coliform Rule Non-health-based Resolved
August 1, 2024 Chlorine Non-health-based Resolved
March 1, 2022 Revised Total Coliform Rule Non-health-based Resolved
January 1, 2022 Chlorine Non-health-based Resolved
November 11, 2021 E. COLI Non-health-based Resolved
October 1, 2021 Endrin Non-health-based Resolved
October 1, 2021 BHC-GAMMA Non-health-based Resolved
October 1, 2021 Methoxychlor Non-health-based Resolved
October 1, 2021 Toxaphene Non-health-based Resolved
October 1, 2021 Dalapon Non-health-based Resolved
October 1, 2021 Diquat Non-health-based Resolved
October 1, 2021 Endothall Non-health-based Resolved
October 1, 2021 Glyphosate Non-health-based Resolved
October 1, 2021 Di(2-ethylhexyl) adipate Non-health-based Resolved
October 1, 2021 OXAMYL Non-health-based Resolved
October 1, 2021 Simazine Non-health-based Resolved
October 1, 2021 Di(2-ethylhexyl) phthalate Non-health-based Resolved
October 1, 2021 Picloram Non-health-based Resolved
October 1, 2021 Dinoseb Non-health-based Resolved

Contaminants Detected

The following contaminants have been flagged in EPA records for this water system:

Contaminant Category Violations Health-Based
Endrin Other Violation 2 No
BHC-GAMMA Other Violation 2 No
Methoxychlor Other Violation 2 No
Toxaphene Other Violation 2 No
Dalapon Other Violation 2 No
Diquat Other Violation 2 No
Endothall Other Violation 2 No
Glyphosate Other Violation 2 No
Di(2-ethylhexyl) adipate Other Violation 2 No
OXAMYL Other Violation 2 No
Simazine Other Violation 2 No
Di(2-ethylhexyl) phthalate Monitoring & Reporting 2 No
Picloram Other Violation 2 No
Dinoseb Other Violation 2 No
Hexachlorocyclopentadiene Other Violation 2 No

Health Risk Details

Lead (EPA level: 0.015 mg/L (EPA action level for the 90th percentile of a system's tap samples; not a safe level))

Brain damage in children, kidney & blood pressure in adults At-risk groups: infants, children under 6, pregnant women.

Treatment options (verify a product is certified to reduce this contaminant): reverse osmosis, distillation, carbon block filter certified for lead reduction (NSF/ANSI 53). Find the right filter โ†’

Lead & Copper

EPA Lead and Copper Rule evidence attributed directly to this water system:

Lead Level Exceeds Action Level Sample Date
Below the reporting limit No 2025-12-31

No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.

Radon Risk in Service Area

1 of 1 ZIP records with known zones is in EPA Radon Zone 1.

The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.

ZIP Codes Served

Coverage: Service area ZIP codes sourced from EPA Community Water System Service Area Boundaries v3 (March 2026 release). These ZIPs reflect the actual deployment footprint recorded by ID or modeled from parcel and building-footprint data.

  • 83648 - Mountain Home A F B

Data Sources

This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Mountain Home Air Force Base (ID4200054) on EPA.gov.

Frequently Asked Questions

Is Mountain Home Air Force Base water safe to drink?

The accepted 2026Q2 ECHO snapshot shows no current noncompliance for Mountain Home Air Force Base; its 111 accepted 2021-2026 records are resolved or archived. Historical compliance status does not establish conditions at a specific tap.

How many people does Mountain Home Air Force Base serve?

Mountain Home Air Force Base serves approximately 7,500 people across 1 ZIP code in Idaho.

Where does Mountain Home Air Force Base get its water?

The primary water source is groundwater.

Federal UCMR5 PFAS Monitoring: Detected

This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). PFAS compounds were detected; the table compares each one with the EPA MCL where one exists (April 2024 rule, compliance required from 2029) and with this state's enforceable standard where one exists.

Samples collected
174
Detections
10
Latest sample
10/25/2023
Highest analyte
PFHxA: 13 ppt
Analyte Max detected EPA MCL (compliance required from 2029) Status
PFHxA 13 ppt No federal MCL โ€”
PFHxS 10 ppt 10 ppt Below EPA MCL
PFPeA 6.7 ppt No federal MCL โ€”
PFBS 4.8 ppt No federal MCL โ€”

EPA's April 2024 PFAS rule sets MCLs of 4 ppt for PFOA and PFOS and 10 ppt for PFHxS, PFNA and HFPO-DA (GenX); water systems must comply from 2029. Other PFAS compounds have no individual federal MCL. A state standard is shown only where this system's state has its own enforceable PFAS limit. Detection results are EPA UCMR5 samples, not a measurement at your tap.

Source: U.S. EPA UCMR5 (Unregulated Contaminant Monitoring Rule, 5th cycle) โ€” per-system federal sampling, 2023โ€“2025. EPA UCMR5 monitoring program โ†’

Understand PFAS health context and filtration โ†’

Frequently Asked Questions

Is water from Mountain Home Air Force Base safe to drink? ▼
Mountain Home Air Force Base has 111 recorded violations since 2021. The C shown is a ZIP-area score, not a grade for this utility; see the violation table for what was violated.
Should I use a water filter? ▼
Given 111 recorded violations, review the violation types and dates; a filter certified for a specific contaminant of concern can reduce that contaminant at the tap. Monitoring or reporting violations are not something a filter addresses.
How many people does Mountain Home Air Force Base serve? ▼
Mountain Home Air Force Base serves approximately 7,500 people with drinking water across 1 ZIP code.
What is Mountain Home Air Force Base's water source? ▼
Mountain Home Air Force Base draws water from groundwater sources. Source type affects which contaminants are most likely to be present.
Is there lead in Mountain Home Air Force Base's water? ▼
The reported 90th-percentile lead result is below the laboratory reporting limit, not a measured zero; EPA's health goal for lead is zero. This is at or below the EPA lead action level, which triggers system action and is not a safe level; the EPA health goal for lead is zero.
What is the demographic profile of the ZIP codes associated with Mountain Home Air Force Base? ▼
The ZIP codes mapped to Mountain Home Air Force Base have a median household income of $72,411 (Census ZIP-code estimate). Demographic data is sourced from the U.S. Census Bureau and EPA EJScreen.
Where does Mountain Home Air Force Base get its water? ▼
Mountain Home Air Force Base's water is classified in EPA records as a groundwater source. Groundwater is naturally filtered through rock and soil, but it can be vulnerable to PFAS contamination, nitrates from agriculture, and industrial chemicals that seep into the water table. The available violation history and environmental indicators place this system in the elevated review category; they do not measure current source contamination.

How to cite this page

APA ZipCheckup. (n.d.). Mountain Home Air Force Base (ID): 1 Health Violation. https://zipcheckup.com/water-system/id4200054/
BibTeX
@misc{zipcheckup-water-system-id4200054,
  author = {{ZipCheckup}},
  title  = {{Mountain Home Air Force Base (ID): 1 Health Violation}},
  year   = {n.d.},
  url    = {https://zipcheckup.com/water-system/id4200054/}
}

What You Can Do

1

Test your water

Home test kits can detect lead, bacteria, and other contaminants at your tap. Find the right filter โ†’

2

Check your specific ZIP code

Water quality can vary within a system. View nearest ZIP report โ†’

3

Contact your utility

Mountain Home Air Force Base (EPA ID: ID4200054) - request the latest Consumer Confidence Report or ask about specific contaminants.

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