Environmental compliance
Environmental compliance in Idaho
6,463 active EPA-regulated sites in Idaho: 976 with an identified violation, 162 in significant violation, $26.5 million in penalties over five years — EPA ECHO, as of October 18, 2026, by county and facility.
How many facilities in Idaho are regulated by the EPA, and how many are in violation (as of October 18, 2026)?
How many active facilities in Idaho fall under each EPA program?
A facility can be in several programs.
| Program | Active sites |
|---|---|
| Air (Clean Air Act) | 1,229 |
| Water discharge permits (Clean Water Act, NPDES) | 2,614 |
| Hazardous waste (RCRA) | 1,341 |
| Drinking water systems (SDWA) | 1,779 |
| Toxics Release Inventory reporters | 128 |
| Greenhouse gas reporters (GHGRP) | 28 |
Which counties in Idaho have the most facilities in significant violation of EPA rules?
Which large facilities in Idaho are in significant violation of EPA rules?
| Facility | Compliance status | Quarters in violation (of 12) | Penalties, 5 years |
|---|---|---|---|
| J R SIMPLOT CO DON PLANT SOUTH Pocatello, ID | Significant Violation | 12 | $4.5 million |
| AGRIUM CONDA PHOSPHATE OPERATIONS Soda Springs, ID | Significant Violation | 12 | $2,250 |
| INEEL CENTRAL FACILITIES AREA Howe, ID | Significant Violation | 12 | – |
| PRESTON WWTP Preston, ID | Significant Violation | 12 | – |
| AMALGAMATED SUGAR CO LLC Twin Falls, ID | Significant Violation | 11 | $22,600 |
| BURLEY-HEYBURN INDUSTRIAL PARK WWTP Burley, ID | Significant Violation | 11 | – |
| IDAHO FOREST GROUP LLC - RILEY CREEK-MOYIE SPRINGS Moyie Springs, ID | Significant Violation | 11 | – |
| REXBURG WWTP Rexburg, ID | Significant Violation | 11 | – |
| POCATELLO CITY WWTP Pocatello, ID | Significant Violation | 10 | – |
| SANDPOINT WWTP Sandpoint, ID | Significant Violation | 9 | $3,450 |
| CALDWELL WWTP Caldwell, ID | Significant Violation | 9 | – |
| THE AMALGAMATED SUGAR COMPANY MINI-CASSIA Paul, ID | Significant Violation | 7 | – |
| MOSCOW STP Moscow, ID | Significant Violation | 4 | – |
| BLIND CANYON AQUARANCH TUPPER SPRINGS Hagerman, ID | Significant Violation | 3 | – |
Which large facilities in Idaho had the highest environmental penalties in the last five years?
EPA Enforcement and Compliance History Online (ECHO), weekly national export. Counts cover active sites in the Facility Registry Service; inspections, formal actions and penalties cover the last five years, quarters in violation the last three years. The EPA attributes a case that covers several facilities to each of them; area penalty totals here count an amount shared through the same federal case once, facility figures show the amount attributed to that facility. Large facilities are Clean Air Act majors, Clean Water Act majors and large hazardous waste generators or handlers. Source record.
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