Grant, OR
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 Grant in Oregon · Population: 7,238
SDWIS systems such as JOHN DAY, CITY OF; PRAIRIE CITY; CANYON CITY WATER DEPARTMENT anchor Grant, OR'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 Grant in this extract; water coverage still lists JOHN DAY, CITY OF; PRAIRIE CITY; CANYON CITY WATER DEPARTMENT. AQS monitors logged median AQI 49 / peak 204 in 2024.
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 Grant -- 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.
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 | 189 (52%) | 158 | 5 | 204 |
| 2023 | 207 (57%) | 156 | 2 | 110 |
| 2022 | 198 (54%) | 166 | 1 | 108 |
| 2021 | 178 (49%) | 177 | 5 | 175 |
| 2020 | 196 (54%) | 161 | 1 | 393 |
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 Oregon, see the EPA's AirNow.gov.
Water Systems (9)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| JOHN DAY, CITY OF | 1,617 | 0 |
| PRAIRIE CITY | 841 | 3 |
| CANYON CITY WATER DEPARTMENT | 666 | 2 |
| MOUNT VERNON, CITY OF | 510 | 3 |
| SUMPTER, CITY OF | 208 | 8 |
| SENECA, CITY OF | 200 | 0 |
| LONG CREEK, CITY OF | 173 | 0 |
| DAYVILLE, CITY OF | 155 | 0 |
| MONUMENT, CITY OF | 115 | 9 |
Cities in Grant (9)
Frequently Asked Questions
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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.