Richland, MT
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 Richland in Montana · Population: 11,329
TRI sites such as Sidney Sugars Inc; Lewis & Clark Station; Bakken Gas Plant; SDWIS systems such as SIDNEY CITY OF; FAIRVIEW TOWN OF; LAMBERT SEWER AND WATER ASSN anchor Richland, MT's EPA extract. Derived burden score 28/100 (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 Richland include FAIRVIEW TOWN OF; RICHLAND CO VALLEY VIEW WUA, while Sidney Sugars Inc leads reported TRI pounds among local Form R filers. AQS median AQI 36 / peak 118 in 2024.
Burden score 28/100 (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 Richland -- 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 Richland, MT: EPA TRI 2023 reporting year
Same facilities, both years
+84.0%
1 facilities that filed in 2022 and 2023
Whole inventory
-95.6%
156.0 thousand lb → 6.9 thousand lb, every facility that filed
These two measures point in opposite directions. Releases from the facilities present in both years rose, while the inventory-wide total fell. The difference is which facilities filed, not a different estimate of the same plants.
Between the two reporting years, 0 facilities filed for the first time and 1 stopped filing. Facilities entering or leaving the inventory are excluded from the same-facility comparison above.
- Richland, MT's total reported releases rose from 3.8 thousand lb in 2022 to 6.9 thousand lb in 2023, based on EPA TRI filings.
- Richland, MT's off-site transfers rose from 3.0 thousand lb in 2022 to 5.9 thousand lb in 2023, based on EPA TRI filings.
- Richland, MT's air releases rose from 750 lb in 2022 to 1.0 thousand lb in 2023, based on EPA TRI filings.
- Richland, MT's chemicals reported fell from 7 in 2022 to 5 in 2023, based on EPA TRI filings.
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 | 307 (84%) | 54 | 5 | 118 |
| 2023 | 267 (73%) | 87 | 5 | 219 |
| 2022 | 322 (89%) | 39 | 0 | 79 |
| 2021 | 284 (81%) | 63 | 4 | 147 |
| 2020 | 343 (94%) | 23 | 0 | 72 |
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 Montana, see the EPA's AirNow.gov.
Water Systems (5)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| SIDNEY CITY OF | 5,000 | 0 |
| FAIRVIEW TOWN OF | 1,000 | 2 |
| LAMBERT SEWER AND WATER ASSN | 150 | 0 |
| RICHLAND CO VALLEY VIEW WUA | 85 | 28 |
| MOUNT PLEASANT ESTATES | 45 | 0 |
TRI Facilities (3)
| # | Facility | Total Releases |
|---|---|---|
| 1 | Sidney Sugars Inc | 742.1K lbs |
| 2 | Lewis & Clark Station | 263.5K lbs |
| 3 | Bakken Gas Plant | 10.7K lbs |
Cities in Richland (3)
Frequently Asked Questions
What is the environmental risk level in Richland, Montana? ▼
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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.
Read our methodology - how this data is sourced, computed, and verified.