Washington, 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 Washington in Oregon · Population: 600,266
TRI sites such as Analog Devices Inc. Beaverton; Intel Corp-Ronler Acres Campus; Pacific Foods; SDWIS systems such as TUALATIN VALLEY WATER DISTRICT; HILLSBORO, CITY OF; BEAVERTON, CITY OF anchor Washington, OR's EPA extract. Derived burden score 65/100 (High 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 Washington include LA WATER CO-OP; BANKS WATER DEPARTMENT; HILLSBORO-CHERRY GROVE, while Analog Devices Inc. Beaverton leads reported TRI pounds among local Form R filers. AQS median AQI 33 / peak 105 in 2024.
Burden score 65/100 (High 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 Washington -- 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 Washington, OR: EPA TRI 2023 reporting year
Same facilities, both years
-49.7%
37 facilities that filed in 2022 and 2023
Whole inventory
-49.7%
457.1 thousand lb → 229.7 thousand lb, every facility that filed
Between the two reporting years, 1 facility filed for the first time and 1 stopped filing. Facilities entering or leaving the inventory are excluded from the same-facility comparison above.
- Washington, OR's total reported releases fell from 456.9 thousand lb in 2022 to 229.7 thousand lb in 2023, based on EPA TRI filings.
- Washington, OR's off-site transfers fell from 354.6 thousand lb in 2022 to 144.7 thousand lb in 2023, based on EPA TRI filings.
- Washington, OR's air releases fell from 102.2 thousand lb in 2022 to 85.0 thousand lb in 2023, based on EPA TRI filings.
- Washington, OR's chemicals reported fell from 37 in 2022 to 34 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 | 309 (84%) | 55 | 2 | 105 |
| 2023 | 269 (74%) | 94 | 2 | 115 |
| 2022 | 244 (67%) | 118 | 1 | 164 |
| 2021 | 276 (76%) | 89 | 0 | 100 |
| 2020 | 265 (72%) | 91 | 2 | 595 |
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 (38)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| TUALATIN VALLEY WATER DISTRICT | 224,600 | 0 |
| HILLSBORO, CITY OF | 92,632 | 0 |
| BEAVERTON, CITY OF | 88,045 | 0 |
| TIGARD, CITY OF | 62,500 | 0 |
| TUALATIN, CITY OF | 28,106 | 0 |
| FOREST GROVE, CITY OF | 26,838 | 0 |
| SHERWOOD, CITY OF | 19,885 | 0 |
| CORNELIUS, CITY OF | 14,490 | 0 |
| RALEIGH WATER DISTRICT | 4,500 | 0 |
| NORTH PLAINS WATER DEPARTMENT | 3,663 | 0 |
| LA WATER CO-OP | 2,500 | 1 |
| BANKS WATER DEPARTMENT | 2,070 | 2 |
| HILLSBORO-CHERRY GROVE | 1,628 | 2 |
| PALATINE HILL WATER DISTRICT | 1,500 | 0 |
| GASTON, CITY OF | 625 | 0 |
| FIR GROVE HOMEOWNERS ASSN | 450 | 0 |
| STAR SATELLITE IMPROV DIST | 400 | 0 |
| SOUTH HILLS WATER SYSTEM | 250 | 0 |
| LAURELWOOD WATER USERS | 200 | 8 |
| TIMBER WATER ASSOCIATION | 180 | 2 |
| PARRETT MOUNTAIN VIEW ESTATES | 155 | 0 |
| COUNTRY SQUIRE ESTATES | 150 | 0 |
| MAPLE GROVE ESTATES | 115 | 0 |
| BERKELEY ESTATES | 94 | 0 |
| WOLSBORN FARMS WATER DISTRICT | 92 | 2 |
| COUNTRY VILLA MOBILE ESTATES | 90 | 0 |
| DUNN COURT DUPLEXES | 88 | 20 |
| STEEVES MOBILE CITY | 80 | 0 |
| LAKEVIEW TRAILER PARK | 70 | 0 |
| WOODBURN MOBILE ESTATES | 70 | 1 |
| TOTEM VILLAGE MHP | 70 | 0 |
| WEST LAUREL ACRES WATER CO | 65 | 1 |
| HAT ROCK MOBILE COURT | 60 | 0 |
| LAUREL ACRES WATER CO INC | 50 | 7 |
| RAINBOW ENDS WATER SYSTEM | 50 | 0 |
| HOGG HEAVEN MHP | 40 | 1 |
| THURSTON OAKS MHP | 38 | 0 |
| JOINT WATER COMMISSION | 0 | 0 |
TRI Facilities (42)
Cities in Washington (12)
Frequently Asked Questions
What is the environmental risk level in Washington, Oregon? ▼
Are there Superfund sites in Washington? ▼
How many toxic release facilities are in Washington? ▼
What is the air quality in Washington? ▼
Is the drinking water safe in Washington? ▼
What environmental agencies cover Washington? ▼
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.