EPA-regulated facilities in Merrimack County, NH

There are 3,346 EPA-regulated facilities inside Merrimack County, New Hampshire. The most common kinds are hazardous waste (2,345), water discharge (688), drinking water systems (306). 10 are currently in significant noncompliance, the EPA's designation for the most serious or persistent violations, and 32 have a violation on record. Penalties over the last five years total $2.4M across 8 sites.

Open the map of Merrimack County

3,346facilities in the county

10in significant noncompliance

32with a violation on record

$2.4Min penalties, last 5 years

By category

Category	Facilities
Hazardous waste	2,345
Large quantity generators	8
Small quantity generators	260
Transporters	5
Chemical (RMP/TRI)	53
Superfund	4
Air emissions	249
Major sources	6
Synthetic minor sources	46
Minor sources	173
Water discharge	688
Major permits	9
Minor permits	460
Drinking water systems	306
Greenhouse gas reporters	2
Scrap yards	1
Recycling centers	4

A facility enrolled in several programs counts once in the total and once in each of its categories.

In significant noncompliance

The EPA's designation for its most serious or persistent violations, as of the latest data.

WARNER VILLAGE WATER DISTRICT RFD #1 JOPPA ROAD, WARNER, NH, 03278 Significant noncompliance
CONTOOCOOK VILLAGE PCT-TREATMENT PLANT 99 N STATE ST, CONCORD, NH, 03301 Significant noncompliance
NORTHFIELD SANITARY SEWER SYSTEM 133 PARK STREET, TILTON, NH, 03276 Significant noncompliance
BRIGHTFARMS NH 662 NH ROUTE 106, LOUDON, NH, 03307 Significant noncompliance
HENNIKER WASTEWATER TREATMENT FACILITY 199 RAMSDELL ROAD, HENNIKER, NH, 03242 Significant noncompliance
KENT NUTRITION GROUP INC FKA BLUE SEAL FEEDS INC 520 HALL ST, BOW, NH, 03304 Significant noncompliance
BOW AUTO PARTS, INC. 1317 ROUTE 3-A, BOW, NH, 03304 Significant noncompliance
PIKE INDUSTRIES 38 HACKETT HILL ROAD, HOOKSETT, NH, 03106 Significant noncompliance
STA - EPSOM TERMINAL 103 NH-107, EPSOM, NH, 03234 Significant noncompliance
MANCHESTER WATER WORKS - MERRIMACK RIVER TREATMENT PLANT 18 KIMBALL DRIVE, HOOKSETT, NH, 03106 Significant noncompliance

Largest penalties

Penalties assessed over the last five years.

SCHNITZER NE SANDQUIST STREET FACILITY 25 SANDQUIST ST, CONCORD, NH, 03301 $1.6M in penalties
STA - KEARSARGE TERMINAL 2345 STATE ROUTE 114, BRADFORD, NH, 03221 $325k in penalties
STUDENT TRANSPORTATION OF AMERICA - EPSOM 103 ROUTE 107, EPSOM, NH, 03234 $325k in penalties
GSP MERRIMACK LLC 431 RIVER RD, BOW, NH, 03304 $202k in penalties
GE AEROSPACE 9 & 13 INDUSTRIAL PARK DR, HOOKSETT, NH, 03106 $7k in penalties

Superfund sites

MERRIMACK RIVER TANNERY WASTE NO ADDRESS IN CERCLIS, BOSCAWEN, NH, 03303
ALLIED LEATHER 36-38, 40-46, 48-56 COMMERCIAL ST, BOSCAWEN, NH, 03303
NEW LONDON CLEANERS 93 NEWPORT ROAD, NEW LONDON, NH, 03257
QUALITY DRIVE AREA SITE QUALITY DRIVE, KIMBALL DRIVE, W. RIVER ROAD, HOOKSETT, NH, 03106-2637

Towns in Merrimack County

Concord

Bordering counties

Reading these numbers

These are regulatory records, not measurements of pollution. Most facilities appear because they hold a permit or file reports, and most of them are compliant; a listing is not a claim that a facility has polluted anything. Compliance status and penalties are the EPA's own determinations in data retrieved Oct 9, 2026. The Data page explains where each record comes from and how it can mislead.