Marion, OR
A PlainEnviro-computed score from reported facility/violation counts, not an official EPA rating, health forecast, or population-adjusted rate. See methodology.
Environmental data for Marion in Oregon · Population: 346,532
Marion, OR is tracked across three EPA datasets covering 16 Toxics Release Inventory (TRI) facilities, 58 Safe Drinking Water Act systems, and 0 Superfund National Priorities List sites. Together these generate an environmental burden score of 49/100 (Moderate Risk), calibrated against national distributions for facility density, chemical release volume, Superfund concentration, and water-system health violations.
Industrial disclosures inside the county total 424.4K lbs of reported toxic releases under EPCRA Section 313, while 19 water systems carry an active health-based violation in the SDWIS record. EPA Air Quality System monitors logged a median AQI of 35 and a peak AQI of 129 in 2024, with 81% of observed days rated "Good" (0–50).
All figures below draw directly from federal EPA records, TRI self-reported emissions, SDWIS compliance history, NPL Hazard Ranking System scores, and AQS daily AQI summaries, and are not adjusted, weighted, or forecast. A past violation or elevated score does not itself indicate current unsafe conditions; it documents the regulatory and disclosure history publicly filed with the U.S. Environmental Protection Agency through the most recent reporting cycle.
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 | 298 (81%) | 64 | 4 | 129 |
| 2023 | 268 (73%) | 93 | 4 | 128 |
| 2022 | 254 (70%) | 104 | 5 | 168 |
| 2021 | 280 (77%) | 83 | 0 | 93 |
| 2020 | 278 (76%) | 76 | 1 | 1272 |
Source: EPA Air Quality System (AQS) Annual AQI by County 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 (58)
| System | Population | Violations |
|---|---|---|
| WOODBURN, CITY OF | 29,455 | 0 |
| SUBURBAN EAST SALEM WD | 13,900 | 0 |
| SILVERTON, CITY OF | 10,484 | 2 |
| CITY OF STAYTON | 8,400 | 1 |
| AUMSVILLE, CITY OF | 4,125 | 0 |
| MOUNT ANGEL, CITY OF | 3,650 | 3 |
| HUBBARD, CITY OF | 3,478 | 1 |
| JEFFERSON, CITY OF | 3,348 | 0 |
| SUBLIMITY, CITY OF | 3,025 | 0 |
| TURNER, CITY OF | 2,866 | 0 |
| GERVAIS WATER DEPARTMENT | 2,571 | 0 |
| LYONS MEHAMA WATER DISTRICT | 1,300 | 2 |
| AURORA, CITY OF | 1,133 | 0 |
| DONALD, CITY OF | 1,107 | 0 |
| OR YOUTH AUTHORITY - MACLAREN | 750 | 0 |
| CENTURY MEADOWS INC | 480 | 0 |
| LABISH VILLAGE WTR COMMISSION | 452 | 0 |
| ST PAUL, CITY OF | 434 | 0 |
| SCOTTS MILLS, CITY OF | 421 | 3 |
| ORCHARD HEIGHTS WATER ASSN | 381 | 0 |
| DEER CREEK ESTATES | 350 | 0 |
| CAROLINA WATER SYSTEM | 300 | 1 |
| GATES, CITY OF | 220 | 0 |
| SURFWOOD VILLA HOA | 200 | 0 |
| HOPE VALLEY RESORT | 200 | 0 |
| LGC MEADOWLARK MANOR LLC | 195 | 0 |
| DUPLEX VILLAGE WATER SYSTEM | 165 | 0 |
| MCNARY OAKS MOBILE VILLA | 160 | 0 |
| ROYAL ESTATES | 160 | 2 |
| SALEM MOBILE ESTATES/SHADY ACRES | 150 | 0 |
| MT ANGEL ABBEY | 150 | 2 |
| BREITENBUSH HOT SPRINGS | 150 | 0 |
| SUNSET WATER SYSTEM INC | 140 | 0 |
| CHATEAU MOBILE HOME PARK | 136 | 0 |
| SUNSET VILLAGE MHP | 120 | 0 |
| WESTERN WAGON VILLAGE | 112 | 2 |
| CHAPARRAL MOBILE RANCH | 110 | 0 |
| TRAILER PARK VILLAGE | 105 | 0 |
| DETROIT WATER SYSTEM | 100 | 2 |
| HOODVIEW MOBILE ESTATES | 100 | 0 |
| MCLAIN VILLAGE WATER DEPT | 100 | 3 |
| SUNNYVIEW MOBILE HOME PARK | 100 | 0 |
| ALPINE CREST IMPROVEMENT DIST | 91 | 3 |
| BREWSTER COMMUNITY HOMEOWNERS | 70 | 3 |
| JEFFERSON MOBILE ACRES | 65 | 2 |
| OLDS MOBILE PARK | 60 | 1 |
| LAKESHORE TERRACE | 60 | 0 |
| LAZY ACRES MOBILE HOME PARK | 59 | 7 |
| WATFORD CITY MOBILE HOME PARK | 52 | 0 |
| 62ND COURT MUTUAL WATER CO | 50 | 0 |
| SILVERTON MOBILE ESTATES | 45 | 0 |
| RALPH TAYLOR TRAILER COURT | 45 | 0 |
| DUPLEX VILLAGE EAST | 41 | 0 |
| GRIM ESTATES | 40 | 0 |
| SANTIAM MEADOWS COMMUNITY WS | 40 | 3 |
| BELLE PASSI ESTATES | 30 | 0 |
| OAKDALE TRAILER PARK | 26 | 0 |
| FOX HOLLOW ESTATES WATER CORP | 26 | 1 |
TRI Facilities (16)
| # | Facility | Total Releases |
|---|---|---|
| 1 | Statera Fiberglass LLC - Aumsville Plant | 210.6K lbs |
| 2 | Ennis-Flint Salem | 99.7K lbs |
| 3 | Engineered Polymer Solutions | 79.8K lbs |
| 4 | Akzo Nobel Coatings Inc | 24.7K lbs |
| 5 | Riverbend Sand & Gravel | 9.4K lbs |
| 6 | M-D Building Products Inc. | 242 lbs |
| 7 | Wheatland Concrete | 25 lbs |
| 8 | Wilbur Ellis Woodburn | 10 lbs |
| 9 | Salem Asphalt | 1 lbs |
| 10 | Quikrete - Oregon Plant | 1 lbs |
| 11 | Woodburn Concrete | 0 lbs |
| 12 | Oldcastle Precast Inc | 0 lbs |
| 13 | Garmin at Inc. | 0 lbs |
| 14 | Foster Farms Donald Feedmill | 0 lbs |
| 15 | Fleetwood Homes of Oregon Inc 48 | 0 lbs |
| 16 | Wilbur Ellis Jefferson | 0 lbs |
Cities in Marion (6)
Frequently Asked Questions
What is the environmental risk level in Marion, Oregon? ▼
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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.