Aroostook, ME
A PlainEnviro-computed score from reported facility/violation counts, not an official EPA rating, health forecast, or population-adjusted rate. See methodology. This is a different measure than the EJ Screening score for this county, which ranks it by percentile against every other tracked county rather than against fixed national thresholds.
Environmental data for Aroostook in Maine · Population: 67,227
Aroostook, ME is tracked across three EPA datasets covering 8 Toxics Release Inventory (TRI) facilities, 35 Safe Drinking Water Act systems, and 0 Superfund National Priorities List sites. Together these generate an environmental burden score of 43/100 (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 9.9M lbs of reported toxic releases under EPCRA Section 313, while 10 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 96 in 2024, with 82% 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 | 299 (82%) | 67 | 0 | 96 |
| 2023 | 277 (76%) | 85 | 3 | 142 |
| 2022 | 304 (84%) | 60 | 0 | 80 |
| 2021 | 305 (84%) | 58 | 1 | 182 |
| 2020 | 316 (86%) | 49 | 0 | 205 |
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 Maine, see the EPA's AirNow.gov.
Water Systems (35)
| System | Population | Violations |
|---|---|---|
| PRESQUE ISLE UTILITIES DISTRICT | 6,128 | 0 |
| HOULTON WATER COMPANY | 4,735 | 0 |
| CARIBOU UTILITIES DISTRICT | 3,943 | 0 |
| MADAWASKA WATER DISTRICT | 2,738 | 0 |
| VAN BUREN WATER DISTRICT | 2,190 | 0 |
| FORT FAIRFIELD UTILITIES DISTRICT | 2,025 | 2 |
| FORT KENT W & W DEPARTMENT | 1,578 | 1 |
| MARS HILL AND BLAINE WATER COMPANY | 1,500 | 126 |
| LIMESTONE WATER & SEWER DISTRICT | 875 | 0 |
| ASHLAND WATER & SEWER DISTRICT | 713 | 0 |
| WASHBURN WATER & SEWER DISTRICT | 688 | 0 |
| EAGLE LAKE WATER & SEWER DISTRICT | 585 | 0 |
| ISLAND FALLS WATER DEPT | 475 | 1 |
| GRAND ISLE WATER SYSTEM | 278 | 0 |
| ST JOSEPHS MEMORY CARE | 143 | 0 |
| TOWN AND COUNTRY APARTMENTS | 136 | 2 |
| PINE GROVE TERRACE | 123 | 0 |
| RIVERSIDE COURT | 100 | 0 |
| ST FRANCIS WATER DISTRICT | 100 | 4 |
| CARIBOU STREAM MOBILE HOME PK | 95 | 0 |
| MOUNTAIN VIEW TRAILER PARK | 95 | 0 |
| A PLACE FOR ALL SEASONS | 90 | 2 |
| MCCULLEY COMMONS APARTMENTS | 73 | 0 |
| SUNNY SLOPE TRAILER PARK | 68 | 0 |
| MAPLE TREE ESTATES | 62 | 0 |
| LORING WOODS PARK | 55 | 0 |
| WINDERMERE APARTMENTS | 50 | 2 |
| PLEASANT RIDGE | 45 | 1 |
| AROOSTOOK RENTAL HOUSING LLC | 42 | 0 |
| WEST RIDGE MANOR | 41 | 0 |
| CREST VIEW MANOR | 38 | 0 |
| MONTICELLO HOUSING CORPORATION | 33 | 0 |
| HODGDON HOMESTEAD | 32 | 3 |
| MONTFORT HEIGHTS | 30 | 0 |
| ST AGATHA HOUSING | 30 | 0 |
TRI Facilities (8)
| # | Facility | Total Releases |
|---|---|---|
| 1 | McCain Foods USA Inc | 9.4M lbs |
| 2 | Twin Rivers Paper Co LLC | 222.4K lbs |
| 3 | Huber Engineered Woods LLC | 166.6K lbs |
| 4 | Louisiana-Pacific Corp | 112.2K lbs |
| 5 | Tate & Lyle Solutions USA LLC | 14.3K lbs |
| 6 | McCrum Washburn Plant | 255 lbs |
| 7 | Daaquam Lumber Maine Inc. | 56 lbs |
| 8 | Smith & Wesson Inc - Houlton | 5 lbs |
Cities in Aroostook (6)
Frequently Asked Questions
What is the environmental risk level in Aroostook, Maine? ▼
Are there Superfund sites in Aroostook? ▼
How many toxic release facilities are in Aroostook? ▼
What is the air quality in Aroostook? ▼
Is the drinking water safe in Aroostook? ▼
What environmental agencies cover Aroostook? ▼
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.