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Butte, ID

Low Risk (24/100)

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 Butte in Idaho · Population: 2,654

TRI sites such as US Doe Idaho National Laboratory Site; SDWIS systems such as ARCO CITY OF; MOORE WATER AND SEWER ASSN; BUTTE CITY OF anchor Butte, ID's EPA extract. Derived burden score 24/100 (Low 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 Butte include ARCO CITY OF, while US Doe Idaho National Laboratory Site leads reported TRI pounds among local Form R filers. AQS median AQI 42 / peak 97 in 2024.

Burden score 24/100 (Low 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 Butte -- 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 Butte, ID: EPA TRI 2023 reporting year

2022 → 2023

Same facilities, both years

-57.0%

1 facilities that filed in 2022 and 2023

Whole inventory

-57.0%

269.0 thousand lb → 115.6 thousand lb, every facility that filed

  • Butte, ID's total reported releases fell from 269.0 thousand lb in 2022 to 115.6 thousand lb in 2023, based on EPA TRI filings.
  • Butte, ID's land releases fell from 106.0 thousand lb in 2022 to 32.3 thousand lb in 2023, based on EPA TRI filings.
  • Butte, ID's off-site transfers fell from 160.0 thousand lb in 2022 to 80.9 thousand lb in 2023, based on EPA TRI filings.
  • Butte, ID's air releases fell from 3.0 thousand lb in 2022 to 2.4 thousand lb in 2023, based on EPA TRI filings.
County population (Census ACS)
2,654
TRI Facilities
1
Water Systems
5
Superfund Sites
0
Total Releases
1.0M lbs

Air Quality History (2020–2024)

EPA Air Quality Index (AQI) data showing how many days per year fall into each air quality category.

Year Good Moderate Unhealthy (SG) Max AQI
2024 303 (85%) 54 0 97
2023 320 (88%) 42 0 80
2022 337 (92%) 28 0 79
2021 289 (80%) 71 3 128
2020 334 (92%) 28 1 152
2024 Good Air Quality: 85% of days
Median AQI: 42

Source: EPA Air Quality System (AQS) Annual AQI by County AQI categories: Good (0-50), Moderate (51-100), Unhealthy for Sensitive Groups (101-150), Unhealthy (151-200), Very Unhealthy (201-300), Hazardous (301+)

For real-time air quality readings and pollutant breakdowns in Idaho, see the EPA's AirNow.gov.

Water Systems (5)

System System pop (SDWIS) Violations
ARCO CITY OF 1,080 2
MOORE WATER AND SEWER ASSN 196 0
BUTTE CITY OF 59 0
HOWE TOWNSITE 55 0
ANTELOPE CREEK LIVING CENTER 27 0

TRI Facilities (1)

# Facility Total Releases
1 US Doe Idaho National Laboratory Site 1.0M lbs

Cities in Butte (4)

Scoville
1 facilities · 0 water
Arco
0 facilities · 2 water
Moore
0 facilities · 2 water
Howe
0 facilities · 1 water

Frequently Asked Questions

What is the environmental risk level in Butte, Idaho? ▼
Butte, ID has an environmental risk score of 24/100 (Low Risk), based on 1 TRI facilities, 0 Superfund sites, and 5 water systems on record. 1 water system have health-based violations. Source: EPA TRI, SDWIS, and Superfund NPL.
Are there Superfund sites in Butte? ▼
No Superfund National Priorities List (NPL) sites are currently registered in Butte, ID in the EPA database.
How many toxic release facilities are in Butte? ▼
Butte, ID has 1 TRI-reporting facility on record with the EPA Toxic Release Inventory, with a combined total of 1.0M lbs in reported toxic releases. TRI facilities self-report annual chemical release data to the EPA.
What is the air quality in Butte? ▼
In 2024, Butte, ID recorded a median AQI of 42 and a peak AQI of 97. 85% of monitored days had "Good" air quality (AQI 0–50). Source: EPA Air Quality System (AQS) Annual AQI by County.
Is the drinking water safe in Butte? ▼
Butte, ID has 5 EPA-regulated water systems. 1 system has 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 Butte? ▼
Environmental compliance in Butte, 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