Hillsborough, 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 Hillsborough in New Hampshire · Population: 424,732
TRI sites such as Worthen Industries; Hitchiner Countergravity Cast Operations (vco/dco/mct); Vibracoustic Na LP; SDWIS systems such as MANCHESTER WATER WORKS; PENNICHUCK WATER WORKS; MERRIMACK VILLAGE DIST; NPL sites such as Fletcher's Paint Works & Storage; Mohawk Tannery; New Hampshire Plating Co. anchor Hillsborough, NH's EPA extract. Derived burden score 85/100 (High 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 Hillsborough include GOFFSTOWN VILLAGE PCT; LOCKE LAKE; EMERALD LAKE, while Worthen Industries leads reported TRI pounds among local Form R filers. AQS median AQI 37 / peak 97 in 2024.
Burden score 85/100 (High 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 Hillsborough -- 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 Hillsborough, NH: EPA TRI 2023 reporting year
Same facilities, both years
+47.1%
34 facilities that filed in 2022 and 2023
Whole inventory
+55.8%
40.1 thousand lb → 62.4 thousand lb, every facility that filed
Between the two reporting years, 2 facilities filed for the first time and 4 stopped filing. Facilities entering or leaving the inventory are excluded from the same-facility comparison above.
- Hillsborough, NH's total reported releases rose from 40.0 thousand lb in 2022 to 58.8 thousand lb in 2023, based on EPA TRI filings.
- Hillsborough, NH's air releases rose from 22.6 thousand lb in 2022 to 40.8 thousand lb in 2023, based on EPA TRI filings.
- Hillsborough, NH's off-site transfers rose from 17.4 thousand lb in 2022 to 18.0 thousand lb in 2023, based on EPA TRI filings.
- Hillsborough, NH's chemicals reported rose from 38 in 2022 to 39 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 | 328 (90%) | 38 | 0 | 97 |
| 2023 | 305 (84%) | 55 | 5 | 119 |
| 2022 | 329 (90%) | 36 | 0 | 100 |
| 2021 | 328 (90%) | 35 | 2 | 144 |
| 2020 | 351 (96%) | 15 | 0 | 90 |
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 (145)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| MANCHESTER WATER WORKS | 123,500 | 0 |
| PENNICHUCK WATER WORKS | 88,853 | 0 |
| MERRIMACK VILLAGE DIST | 25,500 | 0 |
| HUDSON WATER DEPT | 16,700 | 0 |
| MILFORD WATER UTILITIES DEPT | 9,500 | 0 |
| LITCHFIELD | 6,920 | 0 |
| LONDONDERRY | 6,255 | 0 |
| PETERBOROUGH WATER WORKS | 4,500 | 0 |
| GOFFSTOWN VILLAGE PCT | 3,250 | 10 |
| LITTLE POND ESTATES | 3,000 | 0 |
| LOCKE LAKE | 2,308 | 8 |
| HILLSBOROUGH WATER WORKS | 2,000 | 0 |
| WILTON WATER WORKS | 1,790 | 0 |
| DREW WOODS | 1,413 | 0 |
| EMERALD LAKE | 1,300 | 6 |
| POWDER HILL | 1,148 | 0 |
| GRASMERE WATER PCT/MAIN | 1,125 | 1 |
| GREENVILLE WATER DEPT | 1,100 | 0 |
| CABOT PRESERVE | 965 | 0 |
| ANTRIM SEWER AND WATER DEPT | 920 | 0 |
| WILLIAMSBURG | 910 | 0 |
| BROOK PARK ESTS | 880 | 0 |
| BENNINGTON WATER DEPT | 775 | 0 |
| GREEN HILLS ESTS | 618 | 0 |
| BIRCH HILL EAST | 560 | 0 |
| W AND E | 528 | 0 |
| MAPLE HILL ACRES | 500 | 0 |
| WHISPERING WINDS | 488 | 0 |
| GREENVILLE EST VILLAGE DIST | 472 | 0 |
| BADGER HILL | 455 | 0 |
| HANCOCK WATER WORKS | 450 | 0 |
| AVERY ESTATES | 383 | 0 |
| TWIN RIDGE CONDOS | 348 | 0 |
| SAMOSET AT WINNIPESAUKEE | 343 | 1 |
| GOLDEN BROOK | 328 | 0 |
| OAKWOOD TERRACE | 310 | 0 |
| MINISTERIAL/PARRISH HILLS | 305 | 0 |
| VILLAGES AT STOW | 300 | 0 |
| CROTCHED MOUNTAIN SCHOOL | 300 | 10 |
| SOUHEGAN WOODS | 298 | 0 |
| WEDIKO SCHOOL | 280 | 7 |
| GLEN RIDGE DEV | 263 | 0 |
| MAPLE HAVEN | 258 | 0 |
| VILLAGES AT CHESTER CONDOS | 245 | 0 |
| CONTOOCOOK RIVER COOPERATIVE | 245 | 0 |
| SUNRISE ESTATES | 235 | 3 |
| SPRINGWOOD HILLS | 228 | 0 |
| GREAT BAY WATER SYSTEM | 228 | 0 |
| WESCO UTILITIES | 210 | 1 |
| WOODLANDS | 203 | 0 |
| THE MEADOWS | 200 | 0 |
| VALLEY FIELD APTS NORTHLAND | 200 | 0 |
| SOUTH WEARE WATER | 200 | 19 |
| AUTUMN WOODS | 193 | 0 |
| LIBERTY TREE ACRES | 190 | 0 |
| HARVEST VILLAGE | 185 | 0 |
| MOUNTAINSIDE AT CROTCHED MTN | 180 | 1 |
| FOREST VIEW ESTATES | 180 | 0 |
| COLLINS LANDING | 180 | 0 |
| CLEARWATER ESTATES | 173 | 0 |
| LAMPLIGHTER VILLAGE | 173 | 0 |
| SMYTHE WOODS | 168 | 0 |
| SKY VIEW ESTATES | 168 | 0 |
| HI AND LO ESTATES | 150 | 0 |
| DEER MEADOWS | 150 | 0 |
| FOREST RIDGE | 140 | 1 |
| FLETCHER CORNER ESTATES | 140 | 0 |
| BROOKSIDE CROSSING | 138 | 2 |
| MEADOWBROOK ACRES MOBILE HOME PARK | 137 | 0 |
| SPRUCE POND ESTS | 133 | 0 |
| FRANCESTOWN VILLAGE WATER | 130 | 0 |
| OLDE COUNTRY VILLAGE | 130 | 2 |
| BROADVIEW CONDOS | 128 | 0 |
| WHITE ROCK SENIOR LIVING | 120 | 0 |
| HIGHLAND ESTATES APARTMENTS | 120 | 0 |
| HARDWOOD HTS BIRCH HILL | 120 | 0 |
| RIDGEWOOD ESTATES | 115 | 0 |
| CROTCHED MOUNTAIN MNTNC | 115 | 2 |
| MT LAUREL ESTATES | 115 | 2 |
| PACKER MEADOWS | 115 | 1 |
| GARLAND WOODS | 115 | 0 |
| STONE SLED FARM | 113 | 0 |
| BRIAR COURT ESTATES | 113 | 0 |
| GOLDEN HILL | 110 | 4 |
| CASTLE REACH | 110 | 6 |
| ORCHARD HIGHLANDS | 105 | 0 |
| FREEDOM POND | 104 | 1 |
| ASHUELOT RIVER APTS | 100 | 1 |
| COMMONS OF ATKINSON | 95 | 0 |
| PINEHAVEN WATER TRUST | 95 | 0 |
| STONEGATE ESTATES | 95 | 0 |
| FARMSTEAD ACRES | 93 | 0 |
| NORTHERN SHORES | 93 | 0 |
| VALLEY CARES INC | 92 | 0 |
| GRASMERE WP/LANDMARK | 90 | 0 |
| THURSTON WOODS | 90 | 0 |
| SHAKER HEIGHTS | 88 | 0 |
| FARLEY RD ESTATES | 85 | 1 |
| SWEET HILL ESTATES | 85 | 2 |
| WINHALL ACRES | 84 | 3 |
| EVERGREEN DRIVE WATER | 80 | 2 |
| CANDIA CROSSING | 80 | 0 |
| DANIELS LAKE | 78 | 1 |
| SUGAR HILL MANOR MHP | 76 | 3 |
| ASHLEY COMMONS | 75 | 0 |
| KUNCANOWET HILLS MOBILE HOME | 75 | 1 |
| RUNNELLS LANDING | 74 | 0 |
| GAGE HILL | 73 | 0 |
| KILNWOOD ON KANASATKA | 68 | 0 |
| BLACK RIVER OVERLOOK | 66 | 1 |
| HILLCREST MANOR APTS | 65 | 1 |
| SOUTH FACE CONDOS | 60 | 0 |
| REMICK ACRES | 60 | 0 |
| ENGLISH WOODS | 58 | 0 |
| FRANCOEUR APT/HUDSON MOTOR INN | 58 | 0 |
| LOUISBURG CIRCLE | 55 | 0 |
| THE DOX CONDOS | 55 | 11 |
| GOWING WOODS | 53 | 0 |
| BIRCHES OF BENNINGTON | 52 | 1 |
| KINGSTON PINES ELDERLY HOUSING | 52 | 0 |
| STONEARCH CONDO ASSN/KIRKWALL | 52 | 0 |
| CONNOR COURT | 51 | 0 |
| SUN LAKE VILLAGE | 50 | 0 |
| CASTLETON MEADOWS | 50 | 0 |
| HUCKLE HILL HOUSING | 49 | 0 |
| HERITAGE WAY | 48 | 0 |
| HEDGEHOG COMMUNITY COOP | 45 | 0 |
| CARRIAGE APTS | 43 | 1 |
| FOXGLOVE APARTMENTS | 40 | 1 |
| BRIARWOOD TOWNHOMES | 40 | 0 |
| HAMPSHIRE VILLAGE | 40 | 0 |
| BOULDER HILLS | 39 | 1 |
| THE PLACE IN OSSIPEE | 38 | 0 |
| HOLLIS VILLAGE MARKETPLACE | 36 | 13 |
| 20 JAFFREY RD | 32 | 2 |
| FLINTLOCK APTS | 30 | 2 |
| BEAVER HOLLOW | 30 | 0 |
| DANA PLACE | 29 | 0 |
| WILDCAT TOWNHOUSE RESORT | 28 | 2 |
| CROSS MILL VILLAGE | 28 | 0 |
| ROCKWOOD TERRACE CONDOS | 25 | 6 |
| MCAULEY COMMONS | 25 | 0 |
| WESTMINSTER HOUSING | 25 | 0 |
| PAPERMILL VILLAGE | 24 | 1 |
| CORNERSTONE PLACE | 20 | 6 |
TRI Facilities (45)
Superfund Sites (6)
| Site Name | Status | HRS Score |
|---|---|---|
| Fletcher's Paint Works & Storage | NPL Site | 35.39 |
| Mohawk Tannery | Proposed NPL Site | 52.40 |
| New Hampshire Plating Co. | NPL Site | 50.00 |
| Savage Municipal Water Supply | NPL Site | 37.52 |
| South Municipal Water Supply Well | NPL Site | 35.64 |
| Sylvester | NPL Site | 0.00 |
Cities in Hillsborough (23)
Frequently Asked Questions
What is the environmental risk level in Hillsborough, New Hampshire? ▼
Are there Superfund sites in Hillsborough? ▼
How many toxic release facilities are in Hillsborough? ▼
What is the air quality in Hillsborough? ▼
Is the drinking water safe in Hillsborough? ▼
What environmental agencies cover Hillsborough? ▼
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.