Barnstable, MA
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.
Environmental data for Barnstable in Massachusetts · Population: 230,073
TRI sites such as U.S. Army National Guard Camp Edwards Range; Canal Generating LLC; US Coast Guard Base Cape Cod; SDWIS systems such as FALMOUTH WATER DEPT; DENNIS WATER DISTRICT; UPPER CAPE REGIONAL WATER COOPERATIVE; NPL sites such as Otis Air National Guard Base/Camp Edwards anchor Barnstable, MA's EPA extract. Derived burden score 37/100 (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 Barnstable include FALMOUTH WATER DEPT; YARMOUTH WATER DEPARTMENT; PROVINCETOWN WATER DEPARTMENT, while U.S. Army National Guard Camp Edwards Range leads reported TRI pounds among local Form R filers. AQS median AQI 36 / peak 101 in 2024.
Burden score 37/100 (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 Barnstable -- 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 Barnstable, MA: EPA TRI 2023 reporting year
Same facilities, both years
-87.9%
4 facilities that filed in 2022 and 2023
Whole inventory
-87.9%
9.3 thousand lb → 1.1 thousand lb, every facility that filed
Between the two reporting years, 0 facilities filed for the first time and 1 stopped filing. Facilities entering or leaving the inventory are excluded from the same-facility comparison above.
- Barnstable, MA's total reported releases fell from 9.3 thousand lb in 2022 to 1.1 thousand lb in 2023, based on EPA TRI filings.
- Barnstable, MA's air releases fell from 8.2 thousand lb in 2022 to 1 lb in 2023, based on EPA TRI filings.
- Barnstable, MA's off-site transfers fell from 32 lb in 2022 to 13 lb in 2023, based on EPA TRI filings.
- Barnstable, MA's chemicals reported fell from 7 in 2022 to 4 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 | 333 (94%) | 19 | 1 | 101 |
| 2023 | 331 (92%) | 24 | 3 | 140 |
| 2022 | 341 (95%) | 19 | 0 | 93 |
| 2021 | 331 (92%) | 25 | 3 | 126 |
| 2020 | 339 (97%) | 10 | 2 | 108 |
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 Massachusetts, see the EPA's AirNow.gov.
Water Systems (30)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| FALMOUTH WATER DEPT | 97,551 | 6 |
| DENNIS WATER DISTRICT | 65,000 | 0 |
| UPPER CAPE REGIONAL WATER COOPERATIVE | 56,250 | 0 |
| CENTERVILLE OSTERVILLE MARSTONS MILLS WD | 50,000 | 0 |
| HARWICH WATER DEPARTMENT | 39,144 | 0 |
| YARMOUTH WATER DEPARTMENT | 38,900 | 2 |
| MASHPEE WATER DISTRICT | 36,922 | 0 |
| HYANNIS WATER SYSTEM, TOWN OF BARNSTABLE | 35,000 | 0 |
| BREWSTER WATER DEPARTMENT | 35,000 | 0 |
| CHATHAM WATER DEPARTMENT | 30,000 | 0 |
| SANDWICH WATER DISTRICT | 23,000 | 0 |
| BOURNE WATER DISTRICT | 22,500 | 0 |
| PROVINCETOWN WATER DEPARTMENT | 22,250 | 1 |
| ORLEANS WATER DEPARTMENT | 17,460 | 0 |
| BUZZARDS BAY WATER DISTRICT | 7,700 | 0 |
| TOWN OF EASTHAM | 6,199 | 0 |
| OTIS AIR NATIONAL GUARD BASE | 6,000 | 2 |
| BARNSTABLE FIRE DISTRICT | 5,400 | 0 |
| COTUIT FIRE DISTRICT WATER DEPARTMENT | 4,938 | 0 |
| NORTH SAGAMORE WATER DISTRICT | 4,668 | 0 |
| RIVERBRIDGE | 1,330 | 0 |
| WELLFLEET MUNICIPAL WATER SYSTEM | 750 | 1 |
| BARNSTABLE COUNTY JAIL | 600 | 0 |
| SEA OAKS CONDOMINIUMS | 222 | 1 |
| PLEASANT WATER | 200 | 0 |
| HARBORSIDE VILLAGE | 165 | 0 |
| MASSASOIT HILLS TRAILER PARK | 120 | 0 |
| BEECHWOOD POINT CONDOS | 112 | 0 |
| STONES THROW CONDOS | 80 | 0 |
| WELLFLEET APARTMENTS | 48 | 0 |
TRI Facilities (7)
| # | Facility | Total Releases |
|---|---|---|
| 1 | U.S. Army National Guard Camp Edwards Range | 9.3K lbs |
| 2 | Canal Generating LLC | 8.5K lbs |
| 3 | US Coast Guard Base Cape Cod | 5.8K lbs |
| 4 | Cape Cod Ready-Mix | 1 lbs |
| 5 | Cape Cod Ready Mix | 1 lbs |
| 6 | Falmouth Ready Mix Inc | 0 lbs |
| 7 | Cape Cod Ready Mix Inc - Sandwich | 0 lbs |
Superfund Sites (1)
| Site Name | Status | HRS Score |
|---|---|---|
| Otis Air National Guard Base/Camp Edwards | NPL Site | 45.92 |
Cities in Barnstable (24)
Frequently Asked Questions
What is the environmental risk level in Barnstable, Massachusetts? ▼
Are there Superfund sites in Barnstable? ▼
How many toxic release facilities are in Barnstable? ▼
What is the air quality in Barnstable? ▼
Is the drinking water safe in Barnstable? ▼
What environmental agencies cover Barnstable? ▼
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.