Gilliam, 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. 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 Gilliam in Oregon · Population: 2,002
TRI sites such as Chemical Waste Management of the Northwest Inc.; SDWIS systems such as CONDON, CITY OF; ARLINGTON CITY WATER SUPPLY; CONDON HEIGHTS WS anchor Gilliam, OR's EPA extract. Derived burden score 25/100 (Low Risk) uses fixed national caps on density, log release volume, Superfund count, and health-flagged systems - not an official EPA rating.
Chemical Waste Management of the Northwest Inc. is among the largest Form R filers reporting in Gilliam; no SDWIS system here carries an active health-based flag. No AQS county monitors report here.
Burden score 25/100 (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 Gilliam -- 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 Gilliam, OR: EPA TRI 2023 reporting year
Same facilities, both years
-14.4%
1 facilities that filed in 2022 and 2023
Whole inventory
-14.4%
4.8 million lb → 4.1 million lb, every facility that filed
- Gilliam, OR's total reported releases fell from 4.8 million lb in 2022 to 4.1 million lb in 2023, based on EPA TRI filings.
- Gilliam, OR's off-site transfers rose from 27.0 thousand lb in 2022 to 56.9 thousand lb in 2023, based on EPA TRI filings.
- Gilliam, OR's air releases rose from 2.2 thousand lb in 2022 to 2.9 thousand lb in 2023, based on EPA TRI filings.
- Gilliam, OR's chemicals reported rose from 30 in 2022 to 36 in 2023, based on EPA TRI filings.
Water Systems (3)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| CONDON, CITY OF | 742 | 0 |
| ARLINGTON CITY WATER SUPPLY | 628 | 0 |
| CONDON HEIGHTS WS | 33 | 0 |
TRI Facilities (1)
| # | Facility | Total Releases |
|---|---|---|
| 1 | Chemical Waste Management of the Northwest Inc. | 15.6M lbs |
Cities in Gilliam (2)
Frequently Asked Questions
What is the environmental risk level in Gilliam, Oregon? ▼
Are there Superfund sites in Gilliam? ▼
How many toxic release facilities are in Gilliam? ▼
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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.