EPA · discharge permits by state

Discharge permits in New Hampshire

1,994Current permits
41Major dischargers
158Individual permits

A major discharger is one EPA rates as significant on volume, toxicity or the water it reaches; the rest are minors. An individual permit is written for one operation, while general permit coverage applies a statewide permit to a site that qualifies for it.

This page gathers New Hampshire’s current permits three ways below — by the program they are issued under, by the city of the discharge, and by watershed. It names 4 programs, 130 cities and 190 watersheds. Each list says which set it covers.

Every permit’s record

Each of the 1,994 current permits in New Hampshire has a record page: the permittee, the receiving water, the status and dates, and its effluent limits and exceedances. Each city below lists its own; or every permit in New Hampshire, A to Z.

Pages: 1 2

By what is permitted in New Hampshire

By city

The 130 cities with the most permits. All 130 cities in New Hampshire with 3 or more permits are listed at every city in New Hampshire.

Watersheds inside New Hampshire 190

Every watershed with three or more permits in New Hampshire, most permits first.

All 190 watersheds in New Hampshire with 3 or more permits are named on one page at every watershed in New Hampshire.

Other states

Every state carrying three or more current permits, in alphabetical order.

Permits

Major dischargers first. Not every permit in New Hampshire is listed here.

Permit holder	NPDES ID	City	Program	Discharger	Receiving water
ASHLAND TOWN OF	NH0100005	ASHLAND	Publicly owned treatment works	Major	SQUAM RIVER
BERLIN POLLUTION CONTROL FACILITY	NH0100013	BERLIN	Publicly owned treatment works	Major	ANDROSCOGGIN RIVER
BRIDGEWATER POWER COMPANY	NH0022021	BRIDGEWATER		Major	PEMIGEWASSET RIVER
CHARLESTOWN WASTEWATER TREATMENT PLANT	NH0100765	CHARLESTOWN	Publicly owned treatment works	Major	CONNECTICUT RIVER
CITY OF SOMERSWORTH	NH0100277	SOMERSWORTH	Publicly owned treatment works	Major	SALMON FALLS RIVER
CLAREMONT CITY OF	NH0101257	CLAREMONT	Publicly owned treatment works	Major	SUGAR RIVER
CONCORD HALL STREET W W T P	NH0100901	CONCORD	Publicly owned treatment works	Major	MERRIMACK RIVER
DERRY W W T P	NH0100056	DERRY	Publicly owned treatment works	Major	MERRIMACK RIVER
DOVER/HUCKLEBERRY HILL W W T F	NH0101311	DOVER	Publicly owned treatment works	Major	PISCATAQUA RIVER
DURHAM WWTP	NH0100455	DURHAM	Publicly owned treatment works	Major	OYSTER RIVER ESTUARY
ENTHALPY ANALYTICAL	NH0022055	HAMPTON		Major	TAYLOR RIVER
EXETER W W T P	NH0100871	EXETER	Publicly owned treatment works	Major	SQUAMSCOTT RIVER
FARMINGTON WWTP	NH0100854	FARMINGTON	Publicly owned treatment works	Major	COCHECO RIVER
GORHAM ACQUISITION, LLC	NH0000655	GORHAM		Major	ANDROSCOGGIN RIVER
GRANITE SHORE POWER MERRIMACK LLC	NH0001465	BOW		Major	MERRIMACK RIVER
GRANITE SHORE POWER SCHILLER LLC	NH0001473	PORTSMOUTH		Major	PISCATAQUA ESTUARY
GSP NEWINGTON LLC	NH0001601	NEWINGTON		Major	PISCATAQUA ESTUARY
HINSDALE WWTP	NH0100382	HINSDALE	Publicly owned treatment works	Major	ASHUELOT RIVER
HOOKSETT WASTEWATER TREATMENT FACILITY	NH0100129	HOOKSETT	Publicly owned treatment works	Major	MERRIMACK RIVER
KEENE WASTEWATER TREATMENT FACILITY	NH0100790	SWANZEY	Publicly owned treatment works	Major	ASHUELOT RIVER
LANCASTER LAGOON W W T F	NH0100145	LANCASTER	Publicly owned treatment works	Major	CONNECTICUT RIVER
LEAVITT E. MAGRATH WASTEWATER TREATMENT PLAN	NH0100625	HAMPTON	Publicly owned treatment works	Major	TIDE MILL CREEK VIA TRIBUTARY
LEBANON WWTF	NH0100366	WEST LEBANON	Publicly owned treatment works	Major	CONNECTICUT RIVER AND MASCOMA RIVER
LITTLETON TOWN OF	NH0100153	LITTLETON	Publicly owned treatment works	Major	AMMONOOSUC RIVER
MANCHESTER CITY OF	NH0100447	MANCHESTER	Publicly owned treatment works	Major	MERRIMACK RIVER & PISCATAQUOG RIVER
MERRIMACK WASTE WATER TREATMENT PLANT	NH0100161	MERRIMACK	Publicly owned treatment works	Major	MERRIMACK RIVER
MILFORD TOWN OF	NH0100471	MILFORD	Publicly owned treatment works	Major	SOUHEGAN RIVER
MONADNOCK PAPER MILLS, INC.	NH0000230	BENNINGTON		Major	CONTOOCOOK RIVER
NASHUA WASTEWATER TREATMENT FACILITY	NH0100170	NASHUA	Publicly owned treatment works	Major	MERRIMACK RIVER & NASHUA RIVER
NEWINGTON POWER FACILITY	NH0023361	NEWINGTON		Major	PISCATAQUA RIVER
NEWPORT WASTEWATER TREATMENT FACILITY	NH0100200	NEWPORT	Publicly owned treatment works	Major	SUGAR RIVER
PCC STRUCTURALS INC	NH0001023	NORTHFIELD		Major	WINNIPEASAUKEE RIVER
PEASE WASTEWATER TREATMENT FACILITY	NH0090000	PORTSMOUTH	Publicly owned treatment works	Major	GREAT BAY
PETERBOROUGH WASTEWATER TREATMENT PLANT	NH0100650	PETERBOROUGH	Publicly owned treatment works	Major	CONTOOCOOK RIVER
PITTSFIELD WASTEWATER TREATMENT FACILITY	NH0100986	PITTSFIELD	Publicly owned treatment works	Major	SUNCOOK RIVER
PORTSMOUTH CITY OF	NH0100234	PORTSMOUTH	Publicly owned treatment works	Major	PISCATAQUA RIVER
ROCHESTER WWTF	NH0100668	GONIC	Publicly owned treatment works	Major	COCHECO RIVER
SEABROOK WWTP	NH0101303	SEABROOK	Publicly owned treatment works	Major	OCEAN DISCHARGE
SUNAPEE W W T F	NH0100544	SUNAPEE	Publicly owned treatment works	Major	SUGAR RIVER
WATERVILLE VALLEY ADVANCED W W T F	NH0100781	WATERVILLE VALLEY	Publicly owned treatment works	Major	MAD RIVER

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