Coos, NH
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 Coos in New Hampshire · Population: 31,386
TRI sites such as Fci Berlin; Gorham Sand & Gravel Pike Industries Inc; White Mountain Paper Co; SDWIS systems such as BERLIN WATER WORKS; GROVETON WATER SYS; GORHAM WATER AND SEWER DEPT; NPL sites such as Chlor-Alkali Facility (Former) anchor Coos, NH's EPA extract. Derived burden score 32/100 (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 Coos include LANCASTER WATER DEPT; WHITEFIELD WATER; COLEBROOK WATER WORKS, while Fci Berlin leads reported TRI pounds among local Form R filers. AQS median AQI 44 / peak 90 in 2024.
Burden score 32/100 (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 Coos -- 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 Coos, NH: EPA TRI 2023 reporting year
Same facilities, both years
+25.6%
2 facilities that filed in 2022 and 2023
Whole inventory
+25.2%
590 lb → 739 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.
- Coos, NH's total reported releases rose from 588 lb in 2022 to 739 lb in 2023, based on EPA TRI filings.
- Coos, NH's land releases rose from 588 lb in 2022 to 738 lb 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 | 296 (81%) | 69 | 0 | 90 |
| 2023 | 318 (87%) | 42 | 4 | 136 |
| 2022 | 350 (97%) | 9 | 0 | 64 |
| 2021 | 325 (90%) | 33 | 2 | 133 |
| 2020 | 339 (93%) | 27 | 0 | 74 |
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 New Hampshire, see the EPA's AirNow.gov.
Water Systems (14)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| BERLIN WATER WORKS | 9,575 | 0 |
| GROVETON WATER SYS | 2,650 | 0 |
| GORHAM WATER AND SEWER DEPT | 2,630 | 0 |
| LANCASTER WATER DEPT | 2,500 | 6 |
| WHITEFIELD WATER | 1,640 | 3 |
| COLEBROOK WATER WORKS | 1,300 | 3 |
| CARROLL WATER WORKS | 875 | 0 |
| W STEWARTSTOWN WATER PCT | 428 | 0 |
| NORTH STRATFORD WATER DEPT | 300 | 0 |
| PITTSBURG WATER DEPT | 233 | 0 |
| LOST NATION WATER | 65 | 0 |
| GORHAM HILL SPRING | 55 | 0 |
| DEER ESTATES | 53 | 1 |
| NORTH STRATFORD MHP | 50 | 0 |
TRI Facilities (4)
| # | Facility | Total Releases |
|---|---|---|
| 1 | Fci Berlin | 3.0K lbs |
| 2 | Gorham Sand & Gravel Pike Industries Inc | 7 lbs |
| 3 | White Mountain Paper Co | 0 lbs |
| 4 | Fitch Fuel Co Inc. | 0 lbs |
Superfund Sites (1)
| Site Name | Status | HRS Score |
|---|---|---|
| Chlor-Alkali Facility (Former) | NPL Site | 30.54 |
Cities in Coos (12)
Frequently Asked Questions
What is the environmental risk level in Coos, New Hampshire? ▼
Are there Superfund sites in Coos? ▼
How many toxic release facilities are in Coos? ▼
What is the air quality in Coos? ▼
Is the drinking water safe in Coos? ▼
What environmental agencies cover Coos? ▼
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.