TRI air releases
TRI air releases at Oregon have risen 72% since 2010 (through 2024).
State · TRI 2024
Oregon Pollution
229 TRI facilities, 941 public water systems, and 21 Superfund / NPL sites across 30 counties. Statewide TRI releases rose modestly year over year (+12%). Toxic releases concentrations are roughly unchanged from 2010.
FIPS 41 · population 4,237,256 · 36 counties total
Anomaly engine
Notable Signals At The State Level
Where the burden sits
County-Level TRI Choropleth
A color-shaded map of pollution data. Darker counties report more pounds of toxic chemicals released to the EPA's Toxics Release Inventory (TRI).
Shaded by total reported releases for 2024. Counties without a published page render as “no TRI data”. Red dots mark this state's top emitters.
Statewide pollutant pathways
Oregon Pollutant Multi-Year Trends
PM2.5 annual mean (NAAQS 9 µg/m³ (annual))Health riskFine inhalable particles 2.5 micrometers or smaller. They travel deep into the lungs and into the bloodstream — linked to asthma, heart disease, stroke, and premature death.
PM2.5 annual mean (NAAQS 9 µg/m³ (annual)) concentrations have fallen 21% since 2010.
PM2.5 24-hour 98th percentile (NAAQS 35 µg/m³ (24-hour))Health riskFine inhalable particles 2.5 micrometers or smaller. They travel deep into the lungs and into the bloodstream — linked to asthma, heart disease, stroke, and premature death.
PM2.5 24-hour 98th percentile (NAAQS 35 µg/m³ (24-hour)) concentrations are roughly unchanged from 2010.
Ozone 8-hour 4th-highest daily max (NAAQS 0.070 ppm (8-hour))Health riskGround-level ozone (smog) forms when vehicle and industrial emissions react in sunlight. Inflames the airways, triggers asthma attacks, and worsens heart and lung disease.
Ozone 8-hour 4th-highest daily max (NAAQS 0.070 ppm (8-hour)) concentrations are roughly unchanged from 2010.
NO₂ annual mean (NAAQS 53 ppb (annual))Health riskA tailpipe and combustion gas. Concentrates near busy roads and industrial sites; raises risk of airway inflammation, asthma, and lower respiratory infections in children.
NO₂ annual mean (NAAQS 53 ppb (annual)) concentrations have fallen 39% since 2010.
Lifetime cancer risk all pollutants (100 in a million (EPA elevated threshold))Health riskEPA-modeled added cancer cases per million residents from a lifetime of breathing local air toxics. EPA flags 100-in-a-million as elevated.
Single-vintage exposure modeling — EPA cadence is multi-year, so no trend line yet.
Formaldehyde ambient mean (0.077 µg/m³ (1-in-a-million URE))Health riskAn air toxic emitted by refineries, wood products, and combustion. EPA classifies it as a known human carcinogen — long-term inhalation raises cancer risk.
Single-vintage exposure modeling — EPA cadence is multi-year, so no trend line yet.
Benzene ambient mean (0.13 µg/m³ (1-in-a-million URE))Health riskAn air toxic from gasoline, refineries, and tobacco smoke. A known human carcinogen — chronic exposure is linked to leukemia and other blood cancers.
Single-vintage exposure modeling — EPA cadence is multi-year, so no trend line yet.
TRI air releases (5.1 fugitive + 5.2 stack)Health riskToxic chemicals reported by industrial facilities as released into the air — fugitive leaks plus smokestack emissions. Higher pounds means more inhaled exposure for nearby residents.
TRI air releases (5.1 fugitive + 5.2 stack) concentrations are up 72% since 2010.
TRI water releases (5.3)Health riskToxic chemicals reported by industrial facilities as discharged to surface waters (rivers, lakes, the ocean). Affects fishing, recreation, and downstream drinking-water intakes.
TRI water releases (5.3) concentrations have fallen 31% since 2010.
TRI land + off-site releasesHealth riskToxic chemicals released to land on-site or transferred off-site for disposal — landfills, deep-well injection, and similar. Risks groundwater contamination over time.
TRI land + off-site releases concentrations have fallen 17% since 2010.
Greenhouse gases (GHGRP large emitters, through 2023)Health riskGreenhouse gases reported by large industrial emitters under EPA's GHGRP, in metric tons of CO₂ equivalent. Drives climate warming and the heat-related health effects that follow.
Greenhouse gases (GHGRP large emitters, through 2023) concentrations are roughly unchanged from 2010.
| County | Population | Facilities | Total releases | YoY | Top chemical |
|---|---|---|---|---|---|
| Columbia CountyFIPS 41009 | 52,865 | 3 | 6.5M lb | +2% | AmmoniaHealth riskSevere respiratory and eye irritant; high concentrations cause chemical burns to lung tissue. (EPA) |
| Gilliam CountyFIPS 41021 | 1,983 | 1 | 6.4M lb | +56% | Asbestos (friable)Health riskIARC Group 1 carcinogen. Causes mesothelioma, lung cancer, and asbestosis. (IARC, EPA) |
| Linn CountyFIPS 41043 | 128,598 | 13 | 3.4M lb | -14% | Nitrate compounds (water dissociable; reportable only when in aqueous solution)Health riskDrinking-water nitrate causes methemoglobinemia ('blue-baby syndrome') in infants; EPA MCL is 10 mg/L as N. (EPA) |
| Yamhill CountyFIPS 41071 | 107,674 | 9 | 1.9M lb | +94% | Manganese And Manganese CompoundsHealth riskExcess inhalation can cause manganism, a Parkinson-like neurological disorder. (ATSDR) |
| Lincoln CountyFIPS 41041 | 50,334 | 1 | 922k lb | +2% | MethanolHealth riskAcutely toxic if ingested or inhaled. Metabolizes to formaldehyde and formic acid, causing blindness and metabolic acidosis. (EPA) |
| Multnomah CountyFIPS 41051 | 808,098 | 47 | 914k lb | -9% | Nitrate compounds (water dissociable; reportable only when in aqueous solution)Health riskDrinking-water nitrate causes methemoglobinemia ('blue-baby syndrome') in infants; EPA MCL is 10 mg/L as N. (EPA) |
| Clackamas CountyFIPS 41005 | 420,925 | 25 | 823k lb | -7% | Nitrate compounds (water dissociable; reportable only when in aqueous solution)Health riskDrinking-water nitrate causes methemoglobinemia ('blue-baby syndrome') in infants; EPA MCL is 10 mg/L as N. (EPA) |
| Lane CountyFIPS 41039 | 382,218 | 18 | 684k lb | +7% | MethanolHealth riskAcutely toxic if ingested or inhaled. Metabolizes to formaldehyde and formic acid, causing blindness and metabolic acidosis. (EPA) |
| Clatsop CountyFIPS 41007 | 41,190 | 2 | 562k lb | +14% | MethanolHealth riskAcutely toxic if ingested or inhaled. Metabolizes to formaldehyde and formic acid, causing blindness and metabolic acidosis. (EPA) |
| Umatilla CountyFIPS 41059 | 79,904 | 5 | 359k lb | -21% | Nitrate compounds (water dissociable; reportable only when in aqueous solution)Health riskDrinking-water nitrate causes methemoglobinemia ('blue-baby syndrome') in infants; EPA MCL is 10 mg/L as N. (EPA) |
| Facility | City | Top chemical | Total releases | YoY |
|---|---|---|---|---|
| Chemical Waste Management Of The Northwest INC.Waste Management INC | Arlington | Asbestos (friable)Health riskIARC Group 1 carcinogen. Causes mesothelioma, lung cancer, and asbestosis. (IARC, EPA) | 6.4M lb | +56% |
| Dyno Nobel- St.Helens PlantDyno Nobel INC | Deer Island | AmmoniaHealth riskSevere respiratory and eye irritant; high concentrations cause chemical burns to lung tissue. (EPA) | 6.3M lb | +2% |
| Cascade Steel Rolling Mills INCSchnitzer Steel Industries INC | Mcminnville | Manganese And Manganese CompoundsHealth riskExcess inhalation can cause manganism, a Parkinson-like neurological disorder. (ATSDR) | 1.9M lb | +96% |
| Pacific Cast Technologies INCConsolidated Precision Products CORP | Albany | Nitrate compounds (water dissociable; reportable only when in aqueous solution)Health riskDrinking-water nitrate causes methemoglobinemia ('blue-baby syndrome') in infants; EPA MCL is 10 mg/L as N. (EPA) | 1.1M lb | -5% |
| Ati Specialty Alloys & Components LLCAti INC | Albany | Methyl isobutyl ketoneHealth riskEye, skin, and respiratory irritant; central-nervous-system depressant at high exposure. (NIOSH) | 1.0M lb | +51% |
| Cascade Pacific Pulp Halsey Pulp MillInternational Grand Investment CORP | Halsey | MethanolHealth riskAcutely toxic if ingested or inhaled. Metabolizes to formaldehyde and formic acid, causing blindness and metabolic acidosis. (EPA) | 999k lb | +14% |
| Georgia-Pacific Toledo LLCKoch INC | Toledo | MethanolHealth riskAcutely toxic if ingested or inhaled. Metabolizes to formaldehyde and formic acid, causing blindness and metabolic acidosis. (EPA) | 922k lb | +2% |
| Pcc Structurals Lpc Titanium Business OpsBerkshire Hathaway INC | Milwaukie | Nitrate compounds (water dissociable; reportable only when in aqueous solution)Health riskDrinking-water nitrate causes methemoglobinemia ('blue-baby syndrome') in infants; EPA MCL is 10 mg/L as N. (EPA) | 684k lb | +4% |
| International PaperInternational Paper Co | Springfield | MethanolHealth riskAcutely toxic if ingested or inhaled. Metabolizes to formaldehyde and formic acid, causing blindness and metabolic acidosis. (EPA) | 565k lb | +9% |
| Georgia-Pacific Wauna LLCKoch INC | Clatskanie | MethanolHealth riskAcutely toxic if ingested or inhaled. Metabolizes to formaldehyde and formic acid, causing blindness and metabolic acidosis. (EPA) | 561k lb | +14% |
Water utilities to watch
Largest Water Systems With Unresolved Health-Based Violations
Sorted to surface utilities serving the most people that still have an active health-based SDWIS violation on the record. Systems in compliance with no unresolved issues fall to the bottom of the ranking.
| Water system | PWSID | Population served | Health-based · 5yr | Status |
|---|---|---|---|---|
| Oak Lodge Water Services Municipal | OR4101512 | 30,000 | 3 | UNRESOLVED |
| Sandy, City Of Municipal | OR4100789 | 12,991 | 3 | UNRESOLVED |
| Gladstone, City Of Municipal | OR4100321 | 12,121 | 18 | UNRESOLVED |
| Silverton, City Of Municipal | OR4100823 | 10,484 | 3 | UNRESOLVED |
| Umpqua Basin Water Assoc Private | OR4100719 | 9,499 | 1 | UNRESOLVED |
| Scappoose, City Of Municipal | OR4100792 | 8,710 | 3 | UNRESOLVED |
| Brookings, City Of Municipal | OR4100149 | 7,120 | 3 | UNRESOLVED |
| Rainbow Water District Municipal | OR4100839 | 6,300 | 2 | UNRESOLVED |
| Reedsport, City Of Municipal | OR4100699 | 4,836 | 11 | UNRESOLVED |
| Harrisburg, City Of Municipal | OR4100366 | 3,684 | 2 | UNRESOLVED |
Superfund / NPL sites
Federal Cleanup Sites In Oregon
Sites on EPA's Superfund National Priorities List, plus deleted sites whose cleanup objectives EPA has finalized. Federal-facility sites (defense, DOE, etc.) are flagged separately. Each link routes to a per-site page.
| Site | City | Status | Federal facility | Primary contaminant |
|---|---|---|---|---|
| Black Butte Mine | Cottage Grove | NPL FINAL | No | — |
| Bradford Island | Cascade Locks | NPL FINAL | FEDERAL | — |
| Formosa Mine | Riddle | NPL FINAL | No | ArsenicHealth riskIARC Group 1 carcinogen via inhalation and ingestion. EPA MCL 10 µg/L; chronic exposure causes skin, lung, bladder cancer and cardiovascular disease. (IARC, EPA, ATSDR) |
| Fremont National Forest/White King And Lucky Lass Uranium Mines (Usda) | Lakeview | NPL FINAL | FEDERAL | AntimonyHealth riskInhaled antimony trioxide is an IARC Group 2B possible carcinogen; respiratory and cardiovascular effects from long-term exposure. EPA MCL 6 µg/L. (IARC, EPA) |
| J. H. Baxter | Eugene | NPL FINAL | No | — |
| Mccormick & Baxter Creosoting Co. (Portland Plant) | Portland | NPL FINAL | No | ArsenicHealth riskIARC Group 1 carcinogen via inhalation and ingestion. EPA MCL 10 µg/L; chronic exposure causes skin, lung, bladder cancer and cardiovascular disease. (IARC, EPA, ATSDR) |
| North Ridge Estates | Klamath Falls | NPL FINAL | No | ArsenicHealth riskIARC Group 1 carcinogen via inhalation and ingestion. EPA MCL 10 µg/L; chronic exposure causes skin, lung, bladder cancer and cardiovascular disease. (IARC, EPA, ATSDR) |
| Northwest Pipe & Casing/Hall Process Company | Clackamas | NPL FINAL | No | ArsenicHealth riskIARC Group 1 carcinogen via inhalation and ingestion. EPA MCL 10 µg/L; chronic exposure causes skin, lung, bladder cancer and cardiovascular disease. (IARC, EPA, ATSDR) |
| Portland Harbor | Portland | NPL FINAL | No | 1,1-DichloroetheneHealth riskVinylidene chloride; IARC Group 3 (inadequate evidence in humans) but liver toxic in animal studies; common TCE/PCE biodegradation product. (IARC, EPA) |
| Reynolds Metals Company | Troutdale | NPL FINAL | No | 1,1-DichloroetheneHealth riskVinylidene chloride; IARC Group 3 (inadequate evidence in humans) but liver toxic in animal studies; common TCE/PCE biodegradation product. (IARC, EPA) |
Showing the top 10 sites by status priority. 11 additional NPL-relevant sites in Oregon have entity pages — browse them via the host-county or host-city page rollups.
Equity context · ACS 2018-2022 · USEPA-clone EJ disparity
Statewide Population Characteristics
All Oregon block groups: 4,237,256 residents. Statewide disparity score for pm2.5 (fine particulate) sits near the reference (99). Why we surface this →
State-level percentiles are aggregated from block-group EJScreen data. The EJ pattern within the state will be sharper at the county level — drill down for the meaningful spatial detail.
11.9%
Low-income
26.7%
People of color
5.6%
Under age 5
18.3%
Over age 64
- PM2.5 (fine particulate)Health riskFine inhalable particles 2.5 micrometers or smaller. They travel deep into the lungs and into the bloodstream — linked to asthma, heart disease, stroke, and premature death.95in the highest 5% nationally
- OzoneHealth riskGround-level ozone (smog) inflames the airways. Even short exposures trigger asthma attacks and worsen chronic lung and heart disease.13below the national median
- Nitrogen dioxide (NO₂)Health riskA tailpipe and combustion gas. Concentrates near busy roads and industrial sites; raises risk of airway inflammation, asthma, and lower respiratory infections in children.40near the national median
- Diesel particulateHealth riskSoot from diesel engines (trucks, trains, ports, construction). EPA classifies it as a likely human carcinogen and a major driver of childhood asthma near freight corridors.71above the national median
- Toxic releases (RSEI)Health riskEPA's Risk-Screening Environmental Indicators score — weights TRI chemical releases by toxicity, where they go, and how many people are nearby. Higher means greater modeled cancer and chronic-health risk.67above the national median
- Traffic proximityHealth riskPopulation-weighted distance to high-volume roads. Living close to heavy traffic raises exposure to PM2.5, NO₂, and diesel exhaust — and the cardiovascular and asthma risks that follow.60above the national median
- Lead-paint risk (pre-1960 housing)Health riskShare of housing built before 1960, when lead-based paint was common. Dust from deteriorating paint is the leading cause of childhood lead poisoning, which permanently impairs cognitive development.59near the national median
- Superfund site proximityHealth riskPopulation-weighted distance to NPL Superfund sites — the most contaminated waste sites in the country. Nearby groundwater, soil, and air can carry industrial solvents, metals, and other long-lived contaminants.56near the national median
- RMP-facility proximityHealth riskDistance to facilities holding chemicals at quantities large enough to require an EPA Risk Management Plan (refineries, fertilizer plants, etc.). These pose acute exposure risk during accidental releases.71above the national median
- Hazardous-waste site proximityHealth riskDistance to RCRA hazardous-waste handlers (treatment, storage, disposal facilities). Indicates potential exposure to industrial chemicals in air, soil, and groundwater.66above the national median
- Underground storage tanksHealth riskDensity of underground tanks (gasoline, heating oil, industrial fluids). Leaking tanks are a leading source of benzene and other volatile organic compounds in groundwater drinking-water supplies.74above the national median
- NPDES wastewater proximityHealth riskDistance to permitted industrial wastewater dischargers. Closer proximity raises exposure to pollutants released into surface waters used for fishing, recreation, and downstream drinking-water intakes.71above the national median
- Drinking-water non-complianceHealth riskEPA score for public water systems with health-based Safe Drinking Water Act violations. Higher means more residents on systems that recently exceeded safe limits for contaminants like lead, arsenic, or nitrate.90in the highest 10% nationally
| Indicator | Disparity score | Reading |
|---|---|---|
| PM2.5 (fine particulate) | 99 | near the reference |
| Ozone | 17 | well below the reference |
| Nitrogen dioxide (NO₂) | 47 | well below the reference |
| Diesel particulate | 64 | below the reference |
| Toxic releases (RSEI) | 53 | below the reference |
| Traffic proximity | 54 | below the reference |
| Lead-paint risk (pre-1960 housing) | 49 | well below the reference |
| Superfund site proximity | 25 | well below the reference |
| RMP-facility proximity | 57 | below the reference |
| Hazardous-waste site proximity | 52 | below the reference |
| Underground storage tanks | 56 | below the reference |
| NPDES wastewater proximity | 38 | well below the reference |
| Drinking-water non-compliance | 39 | well below the reference |
Source: Census ACS 2018-2022 (5-year) + USEPA-clone EJ blockgroup stats (raw indicators + EJ disparity mirror). EJ disparity scores via the USEPA-clone GitHub mirror after EPA deprecated the public EJScreen tool in 2025; demographics from Census ACS.
Browse
All 30 Oregon Counties With TRI Data
Pollution trends and TRI 2024 pages for every tracked county. Alphabetical.
- Baker County pollution· 1 facility
- Benton County pollution· 4 facilities
- Clackamas County pollution· 25 facilities
- Clatsop County pollution· 2 facilities
- Columbia County pollution· 3 facilities
- Coos County pollution· 3 facilities
- Curry County pollution· 2 facilities
- Deschutes County pollution· 7 facilities
- Douglas County pollution· 11 facilities
- Gilliam County pollution· 1 facility
- Hood River County pollution· 1 facility
- Jackson County pollution· 11 facilities
- Jefferson County pollution· 1 facility
- Josephine County pollution· 3 facilities
- Klamath County pollution· 5 facilities
- Lake County pollution· 1 facility
- Lane County pollution· 18 facilities
- Lincoln County pollution· 1 facility
- Linn County pollution· 13 facilities
- Malheur County pollution· 1 facility
- Marion County pollution· 11 facilities
- Morrow County pollution· 4 facilities
- Multnomah County pollution· 47 facilities
- Polk County pollution· 1 facility
- Tillamook County pollution· 2 facilities
- Umatilla County pollution· 5 facilities
- Union County pollution· 2 facilities
- Wasco County pollution· 3 facilities
- Washington County pollution· 31 facilities
- Yamhill County pollution· 9 facilities
Sources.
- EPA Toxics Release Inventory · retrieved 2026-05-07.