PlainEnviro

Jefferson, ID

Low Risk (15/100)

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 Jefferson in Idaho · Population: 32,234

SDWIS systems such as RIGBY CITY OF; ROBERTS CITY OF; COUNTRY SQUIRE ESTATES anchor Jefferson, ID's EPA extract. Derived burden score 15/100 (Low Risk) uses fixed national caps on density, log release volume, Superfund count, and health-flagged systems - not an official EPA rating.

No TRI Form R facilities sit in Jefferson in this extract; water coverage still lists RIGBY CITY OF; ROBERTS CITY OF; COUNTRY SQUIRE ESTATES. No AQS county monitors report here.

Burden score 15/100 (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 Jefferson -- 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.

County population (Census ACS)
32,234
TRI Facilities
0
Water Systems
14
Superfund Sites
0
Total Releases
0 lbs

Water Systems (14)

System System pop (SDWIS) Violations
RIGBY CITY OF 5,400 2
ROBERTS CITY OF 680 0
COUNTRY SQUIRE ESTATES 450 0
M AND T WATER AND SEWER DIST 358 0
PEPPERWOOD CROSSING/ROCKY MNT UTILITIES 336 4
JEFFERSON GREENS ESTATES 193 0
SUNBROOK ESTATES DIV # 2 144 3
JENCO ACRES 105 0
ELK MEADOWS 100 1
PARKWOOD ACRES WATER COMPANY 88 0
COTTONWOOD ACRES 3 & 5 60 0
IRELAND ACRES 1 54 0
HILLMAN TRAILER COURT 45 1
COUNTRY LIVING CENTER 30 0

Cities in Jefferson (4)

Rigby
0 facilities · 11 water
Monteview
0 facilities · 1 water
Ribgy
0 facilities · 1 water
Roberts
0 facilities · 1 water

Frequently Asked Questions

What is the environmental risk level in Jefferson, Idaho? ▼
Jefferson, ID has an environmental risk score of 15/100 (Low Risk), based on 0 TRI facilities, 0 Superfund sites, and 14 water systems on record. 5 water systems have health-based violations. Source: EPA TRI, SDWIS, and Superfund NPL.
Are there Superfund sites in Jefferson? ▼
No Superfund National Priorities List (NPL) sites are currently registered in Jefferson, ID in the EPA database.
How many toxic release facilities are in Jefferson? ▼
Jefferson, ID has 0 TRI-reporting facilities on record with the EPA Toxic Release Inventory. TRI facilities self-report annual chemical release data to the EPA.
What is the air quality in Jefferson? ▼
Air quality monitoring data (EPA AQS) is not available for Jefferson, 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 Jefferson? ▼
Jefferson, ID has 14 EPA-regulated water systems. 5 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 Jefferson? ▼
Environmental compliance in Jefferson, 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.

Related

Browse all → | Rankings →
Data sourced from U.S. EPA environmental datasets. See our methodology for details. Retrieved and formatted by PlainEnviro