Wasco, 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 Wasco in Oregon · Population: 26,603
TRI sites such as Amerities West LLC; Hood River Sand Gravel & Ready Mix - the Dalles; Hydro Extrusion USA LLC; SDWIS systems such as THE DALLES, CITY OF; WARM SPRINGS WATER TREATMENT PLANT; BARLOW WATER DISTRICT; NPL sites such as Martin-Marietta Aluminum Co.; Union Pacific Railroad Co. Tie-Treating Plant anchor Wasco, OR's EPA extract. Derived burden score 41/100 (Moderate 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 Wasco include WARM SPRINGS WATER TREATMENT PLANT; DUFUR, CITY OF; YOUNG LIFE, while Amerities West LLC leads reported TRI pounds among local Form R filers. AQS median AQI 23 / peak 93 in 2024.
Burden score 41/100 (Moderate 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 Wasco -- 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 Wasco, OR: EPA TRI 2023 reporting year
Same facilities, both years
+4524.2%
2 facilities that filed in 2022 and 2023
Whole inventory
+4725.1%
631 lb → 30.4 thousand lb, every facility that filed
Between the two reporting years, 1 facility filed for the first time and 0 stopped filing. Facilities entering or leaving the inventory are excluded from the same-facility comparison above.
- Wasco, OR's total reported releases rose from 631 lb in 2022 to 29.2 thousand lb in 2023, based on EPA TRI filings.
- Wasco, OR's off-site transfers rose from 5 lb in 2022 to 29.2 thousand lb in 2023, based on EPA TRI filings.
- Wasco, OR's air releases fell from 626 lb in 2022 to 6 lb in 2023, based on EPA TRI filings.
- Wasco, OR's chemicals reported fell from 6 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 | 317 (87%) | 47 | 0 | 93 |
| 2023 | 244 (84%) | 40 | 2 | 214 |
| 2022 | 161 (100%) | 0 | 0 | 50 |
| 2021 | 287 (90%) | 30 | 1 | 163 |
| 2020 | 307 (86%) | 45 | 0 | 599 |
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 (21)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| THE DALLES, CITY OF | 13,010 | 0 |
| WARM SPRINGS WATER TREATMENT PLANT | 3,800 | 43 |
| BARLOW WATER DISTRICT | 900 | 0 |
| DUFUR, CITY OF | 610 | 1 |
| YOUNG LIFE | 497 | 18 |
| MAUPIN, CITY OF | 420 | 3 |
| SIMNASHO SCHOOLIE | 350 | 32 |
| FOLEY LAKES MOBILE HOME PARK | 300 | 0 |
| HAZEL DELL ORCHARD | 260 | 2 |
| TYGH VALLEY WATER DISTRICT | 218 | 2 |
| VIEW POINT TRAILER COURT | 160 | 3 |
| SPORTSMANS PARK WATER ASSN | 150 | 1 |
| PINE GROVE WATER DIST (WASCO) | 140 | 1 |
| SIDWALTER | 130 | 8 |
| PINEWOOD MOBILE MANOR | 130 | 10 |
| WAMIC WATER ASSOCIATION | 130 | 0 |
| BIA CELILO VILLAGE | 75 | 8 |
| ANTELOPE, CITY OF | 46 | 2 |
| SHANIKO WATER SYSTEM | 38 | 2 |
| DUFUR, SOUTH BASIN | 33 | 2 |
| ROWENA DELL WATER SYSTEM | 30 | 0 |
TRI Facilities (3)
| # | Facility | Total Releases |
|---|---|---|
| 1 | Amerities West LLC | 32.4K lbs |
| 2 | Hood River Sand Gravel & Ready Mix - the Dalles | 1.3K lbs |
| 3 | Hydro Extrusion USA LLC | 349 lbs |
Superfund Sites (2)
| Site Name | Status | HRS Score |
|---|---|---|
| Martin-Marietta Aluminum Co. | Deleted NPL Site | 43.70 |
| Union Pacific Railroad Co. Tie-Treating Plant | NPL Site | 37.93 |
Cities in Wasco (8)
Frequently Asked Questions
What is the environmental risk level in Wasco, Oregon? ▼
Are there Superfund sites in Wasco? ▼
How many toxic release facilities are in Wasco? ▼
What is the air quality in Wasco? ▼
Is the drinking water safe in Wasco? ▼
What environmental agencies cover Wasco? ▼
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.