Walla Walla, WA
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. This is a different measure than the EJ Screening score for this county, which ranks it by percentile against other tracked counties rather than against these fixed caps.
Environmental data for Walla Walla in Washington · Population: 62,102
TRI sites such as Boise White Paper LLC; Tyson Fresh Meats Inc Pasco; Walla Walla Foundry Inc.; SDWIS systems such as WALLA WALLA WATER DIVISION; COLLEGE PLACE WATER DEPT; Waitsburg City of anchor Walla Walla, WA's EPA extract. Derived burden score 38/100 (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 Walla Walla include WALLA WALLA WATER DIVISION; DIXIE WATER ASSOCIATION; WESTBOURNE ACRES, while Boise White Paper LLC leads reported TRI pounds among local Form R filers. AQS median AQI 24 / peak 87 in 2024.
Burden score 38/100 (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 Walla Walla -- 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 Walla Walla, WA: EPA TRI 2023 reporting year
Same facilities, both years
-37.3%
5 facilities that filed in 2022 and 2023
Whole inventory
-37.3%
954.5 thousand lb → 598.5 thousand lb, every facility that filed
- Walla Walla, WA's total reported releases fell from 954.5 thousand lb in 2022 to 598.5 thousand lb in 2023, based on EPA TRI filings.
- Walla Walla, WA's water releases fell from 95.0 thousand lb in 2022 to 43.1 thousand lb in 2023, based on EPA TRI filings.
- Walla Walla, WA's air releases fell from 771.9 thousand lb in 2022 to 456.9 thousand lb in 2023, based on EPA TRI filings.
- Walla Walla, WA's chemicals reported fell from 17 in 2022 to 14 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 | 314 (86%) | 52 | 0 | 87 |
| 2023 | 300 (82%) | 61 | 1 | 305 |
| 2022 | 292 (80%) | 70 | 2 | 152 |
| 2021 | 309 (85%) | 51 | 3 | 172 |
| 2020 | 297 (81%) | 60 | 0 | 855 |
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 Washington, see the EPA's AirNow.gov.
Water Systems (25)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| WALLA WALLA WATER DIVISION | 42,959 | 105 |
| COLLEGE PLACE WATER DEPT | 8,147 | 0 |
| Waitsburg City of | 1,817 | 0 |
| CONSOLIDATED IRRIGATION DIST 14 | 1,555 | 0 |
| WALLA WALLA UNIVERSITY | 1,273 | 0 |
| VALLE LINDO HOMES | 787 | 0 |
| GREEN TANK IRR DISTRICT 11 | 553 | 0 |
| PRESCOTT TOWN OF | 522 | 0 |
| ARLENES ADDITION | 480 | 0 |
| ARTESIAN WATER DISTRICT 8 | 302 | 0 |
| HYDRO IRRIGATION DISTRICT NO 9 | 260 | 0 |
| BLALOCK ORCHARD DIST 10 | 250 | 0 |
| DIXIE WATER ASSOCIATION | 240 | 2 |
| WALLULA WATER DISTRICT | 200 | 0 |
| BLALOCK ORCHARDS DIST 12 | 193 | 0 |
| SUN HARBOR WATER DISTRICT #3 | 187 | 0 |
| BURBANK HEIGHTS | 177 | 0 |
| SYDNEY HEIGHTS WATER ASSN | 130 | 0 |
| WESTBOURNE ACRES | 94 | 3 |
| SUMMERS CIRCLE WATER LLC | 82 | 0 |
| KOOSKOOSKIE CABIN OWNERS INC. | 45 | 0 |
| PROSPECT HEIGHTS COMM WATER ASSN | 40 | 1 |
| KZH FARMS - HIGGY | 29 | 0 |
| MINI-PEARL WATER SYSTEM | 28 | 0 |
| RESER CREEK WATER SYSTEM | 26 | 0 |
TRI Facilities (5)
| # | Facility | Total Releases |
|---|---|---|
| 1 | Boise White Paper LLC | 5.1M lbs |
| 2 | Tyson Fresh Meats Inc Pasco | 432.1K lbs |
| 3 | Walla Walla Foundry Inc. | 4.7K lbs |
| 4 | Nelson Irrigation Corp | 750 lbs |
| 5 | Key Technology Inc | 0 lbs |
Cities in Walla Walla (6)
Frequently Asked Questions
What is the environmental risk level in Walla Walla, Washington? ▼
Are there Superfund sites in Walla Walla? ▼
How many toxic release facilities are in Walla Walla? ▼
What is the air quality in Walla Walla? ▼
Is the drinking water safe in Walla Walla? ▼
What environmental agencies cover Walla Walla? ▼
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.