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Elmore, ID

Moderate Risk (37/100)

Transparent derived index from EPA TRI / SDWIS / Superfund extracts: not an official EPA rating. Fixed caps: facilities ≤25 pts (50+ = max), log10 releases ≤25 pts, Superfund ≤25 pts (5/site), health-violation systems ≤15 pts (3/system), high-chemical facilities ≤10 pts. Bands: High ≥60, Moderate ≥30. See methodology.

Environmental data for Elmore in Idaho · Population: 29,046

TRI sites such as US Dod Usaf Mountain Home Afb; US Dod Usaf Small Arms Range; SDWIS systems such as MOUNTAIN HOME, CITY OF; MOUNTAIN HOME AIR FORCE BASE; GLENNS FERRY CITY OF; NPL sites such as Mountain Home Air Force Base anchor Elmore, ID's EPA extract. Derived burden score 37/100 (Moderate Risk) uses fixed national caps on density, log release volume, Superfund count, and health-flagged systems - not an official EPA rating.

Health-flagged SDWIS rows in Elmore include MOUNTAIN HOME, CITY OF; MOUNTAIN HOME AIR FORCE BASE; WILDERNESS RANCH OWNERS ASSOCIATION INC, while US Dod Usaf Mountain Home Afb leads reported TRI pounds among local Form R filers. No AQS county monitors report here.

Burden score 37/100 (Moderate Risk) is the only weighted composite on this page. The tables below list every TRI facility, SDWIS system, and Superfund site EPA has on record for Elmore -- not just the names called out above -- reproducing the disclosure history as filed, not a current-safety verdict. Extract current as of 2026-08-25.

Release-over-release change

What changed for Elmore, ID: EPA TRI 2023 reporting year

2022 → 2023

Same facilities, both years

-11.7%

2 facilities that filed in 2022 and 2023

Whole inventory

-11.7%

32.8 thousand lb → 28.9 thousand lb, every facility that filed

  • Elmore, ID's total reported releases fell from 32.8 thousand lb in 2022 to 28.9 thousand lb in 2023, based on EPA TRI filings.
  • Elmore, ID's air releases fell from 52 lb in 2022 to 25 lb in 2023, based on EPA TRI filings.
  • Elmore, ID's land releases fell from 32.7 thousand lb in 2022 to 28.9 thousand lb in 2023, based on EPA TRI filings.
County population (Census ACS)
29,046
TRI Facilities
2
Water Systems
21
Superfund Sites
1
Total Releases
167.3K lbs

Water Systems (21)

System System pop (SDWIS) Violations
MOUNTAIN HOME, CITY OF 14,651 5
MOUNTAIN HOME AIR FORCE BASE 7,500 16
GLENNS FERRY CITY OF 1,282 0
WILDERNESS RANCH OWNERS ASSOCIATION INC 525 8
TRINITY ESTATES WATER USERS ASSN 250 1
MELLEN SUBD WATER DIST 250 0
SUMMERWIND WATER USERS 192 0
SAWTOOTH ESTATES WATER USERS 175 4
MORES CREEK RIM RANCH WATER DIST 140 0
BLUE SAGE SUBDIVISION 112 0
OSPREY 100 0
SPLENDID ACRES WATER ASSN 91 0
KING HILL DOMESTIC WATER AND SEWER 87 34
TOWN AND COUNTRY WATER USERS ASSN 86 1
NEW HORIZONS WATER INC 85 2
OAKLEAF SUBDIVISION 71 1
RANCH SUBD 65 0
HAMMETT HAVEN APARTMENTS 64 18
CAMAS ESTATES WATER USERS 50 0
BOISE HOLCOMB WATER USERS ASSOC. INC 36 0
SILVER SAGE REAL PROPERTY OWNERS ASSN 30 5

TRI Facilities (2)

# Facility Total Releases
1 US Dod Usaf Mountain Home Afb 163.3K lbs
2 US Dod Usaf Small Arms Range 4.0K lbs

Superfund Sites (1)

Site Name Status HRS Score
Mountain Home Air Force Base NPL Site 57.80

Cities in Elmore (4)

Mountain Home Afb
2 facilities · 1 water
Mountain Home
0 facilities · 13 water
Glenns Ferry
0 facilities · 1 water
King Hill
0 facilities · 1 water

Frequently Asked Questions

What is the environmental risk level in Elmore, Idaho? ▼
Elmore, ID has an environmental risk score of 37/100 (Moderate Risk), based on 2 TRI facilities, 1 Superfund sites, and 21 water systems on record. 11 water systems have health-based violations. Source: EPA TRI, SDWIS, and Superfund NPL.
Are there Superfund sites in Elmore? ▼
Yes, Elmore, ID has 1 Superfund site on the EPA National Priorities List (NPL). Superfund sites are contaminated locations that require long-term cleanup under the EPA Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA).
How many toxic release facilities are in Elmore? ▼
Elmore, ID has 2 TRI-reporting facilities on record with the EPA Toxic Release Inventory, with a combined total of 167.3K lbs in reported toxic releases. TRI facilities self-report annual chemical release data to the EPA.
What is the air quality in Elmore? ▼
Air quality monitoring data (EPA AQS) is not available for Elmore, ID. This may indicate no EPA monitoring stations are located in the county. For regional air quality data, see the state environmental profile or visit EPA's AirNow.gov.
Is the drinking water safe in Elmore? ▼
Elmore, ID has 21 EPA-regulated water systems. 11 systems have reported health-based violations (MCL exceedances). A past violation does not necessarily mean water is currently unsafe. For current water quality, contact your local water utility. Source: EPA SDWIS.
What environmental agencies cover Elmore? ▼
Environmental compliance in Elmore, Idaho is overseen by the U.S. Environmental Protection Agency (EPA) at the federal level and the Idaho state environmental agency. Facilities report to the EPA Toxic Release Inventory, water systems are regulated under the Safe Drinking Water Act, and contaminated sites are managed under the Superfund program. Contact your state environmental agency for local concerns.

What does this county environmental profile show?

This county environmental profile rolls up EPA Toxics Release Inventory facility reports, Safe Drinking Water Information System public-water-system filings, and Superfund National Priorities List sites for the county boundary defined by the U.S. Census Bureau. Facility counts reflect facilities with a reporting address inside the county, not where downstream environmental effects may be observed. Population figures are from the most recent Census ACS 5-year estimate. The county detail page is updated whenever the upstream EPA programs publish revised data; see the methodology page for the documented ingest cadence and the editorial choices governing how aggregations are computed.

Related Guides

Understanding EPA Data
How EPA collects and publishes environmental data
Environmental Justice
Who lives near polluters and environmental hazards
How to Check Environmental Quality
Step-by-step guide to checking your local environment

Read our methodology - how this data is sourced, computed, and verified.

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Data sourced from U.S. EPA environmental datasets. See our methodology for details. Retrieved and formatted by PlainEnviro