EPA · discharge permits by state

Discharge permits in Massachusetts

6,154Current permits
106Major dischargers
661Individual 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.

By what is permitted in Massachusetts

By city

Permits

Major dischargers first. Not every permit in Massachusetts is listed here.

Permit holder	NPDES ID	City	Program	Discharger	Receiving water
ADAMS W W T P	MA0100315	ADAMS	Publicly owned treatment works	Major	HOOSIC RIVER
AMESBURY W W T P	MA0101745	AMESBURY	Publicly owned treatment works	Major	MERRIMACK RIVER
AMHERST W W T P	MA0100218	HADLEY	Publicly owned treatment works	Major	CONNECTICUT RIVER
ATHOL W W T P	MA0100005	ATHOL	Publicly owned treatment works	Major	MILLERS RIVER
ATTLEBORO WPCF	MA0100595	ATTLEBORO	Publicly owned treatment works	Major	TEN MILE RIVER
AYER W W T P	MA0100013	AYER	Publicly owned treatment works	Major	NASHUA RIVER
BELCHERTOWN W W T P	MA0102148	BELCHERTOWN	Publicly owned treatment works	Major	LAMPSON BROOK
BILLERICA W W T P	MA0101711	BILLERICA	Publicly owned treatment works	Major	CONCORD RIVER
BRAYTON POINT LLC	MA0003654	SOMERSET		Major	MOUNT HOPE BAY
BRIDGEWATER W W T F	MA0100641	BRIDGEWATER	Publicly owned treatment works	Major	TOWN RIVER
BROCKTON A W R F	MA0101010	BROCKTON	Publicly owned treatment works	Major	SALISBURY PLAIN RIVER
CHARLES RIVER PCD	MA0102598	MEDWAY	Publicly owned treatment works	Major	CHARLES RIVER
CHARLTON W W T P	MA0101141	CHARLTON	Publicly owned treatment works	Major	CADY BROOK
CHELSEA - CSOS	MA0101877	CHELSEA	Combined sewer overflows	Major	CHELSEA AND MYSTIC RIVERS
CHICOPEE W P C F	MA0101508	CHICOPEE	Publicly owned treatment works	Major	CONNECTICUT & CHICOPEE RIVERS
CLEAN HARBORS OF BRAINTREE INC	MA0031551	BRAINTREE	Industrial stormwater	Major	WEYMOUTH FORE RIVER
CONCORD W W T F	MA0100668	CONCORD	Publicly owned treatment works	Major	CONCORD RIVER
CRANE & CO INC WWTP	MA0000671	DALTON		Major	HOUSATONIC RIVER, EAST BRANCH
DARTMOUTH WPCF	MA0101605	SOUTH DARTMOUTH	Publicly owned treatment works	Major	BUZZARD'S BAY
EAST FITCHBURG WWTF	MA0100986	FITCHBURG	Publicly owned treatment works	Major	NASHUA RIVER, NORTH BRANCH
EASTHAMPTON W W T P	MA0101478	EASTHAMPTON	Publicly owned treatment works	Major	CONNECTICUT RIVER, MANHAN RIVER
EMERALD SQUARE MALL	MA0030244	NORTH ATTLEBOROUGH		Major	WETLAND TO SEVEN MILE RIVER
ERVING CENTER W W T P #2	MA0101052	ERVING	Publicly owned treatment works	Major	MILLERS RIVER
ERVING P O T W #1	MA0101516	ERVING	Publicly owned treatment works	Major	MILLERS RIVER
EVERETT LANDCO, LLC	MA0000833	EVERETT		Major	MYSTIC RIVER / ISLAND END
FAIRHAVEN W W T F	MA0100765	FAIRHAVEN	Publicly owned treatment works	Major	ACUSHNET RIVER-N.BEDFORD INNER HRBR
FALL RIVER W W T P	MA0100382	FALL RIVER	Publicly owned treatment works	Major	MT HOPE BAY
GARDNER W W T F	MA0100994	EAST TEMPLETON	Publicly owned treatment works	Major	OTTER RIVER
GE - AVIATION	MA0003905	LYNN		Major	SAUGUS RIVER
GENERAL ELECTRIC COMPANY	MA0003891	PITTSFIELD		Major	SILVER LK/UNKAMET BK/E.B.HOUSATONIC
GENON HOLDCO 10, LLC	MA0004928	SANDWICH		Major	CAPE COD CANAL
GLOUCESTER W P C F	MA0100625	GLOUCESTER	Publicly owned treatment works	Major	GLOUCESTER HARBOR (ATLANTIC OCEAN)
GRAFTON WASTEWATER TREATMENT	MA0101311	SO. GRAFTON	Publicly owned treatment works	Major	BLACKSTONE RIVER
GREAT BARRINGTON W W T F, TOWN OF	MA0101524	GREAT BARRINGTON	Publicly owned treatment works	Major	HOUSATONIC RIVER
GREATER LAWRENCE SANITARY DISTRICT	MA0100447	NO ANDOVER	Publicly owned treatment works	Major	MERRIMACK RIVER
HAVERHILL W P A F	MA0101621	BRADFORD	Publicly owned treatment works	Major	MERRIMACK AND LITTLE RIVER
HOLLINGSWORTH & VOSE	MA0004561	WEST GROTON		Major	SQUANNACOOK RIVER
HOLYOKE W P C F	MA0101630	HOLYOKE	Publicly owned treatment works	Major	CONNECTICUT RIVER
HOOSAC W P C F	MA0100510	WILLIAMSTOWN	Publicly owned treatment works	Major	HOOSIC RIVER
HOPEDALE W W T P	MA0102202	HOPEDALE	Publicly owned treatment works	Major	MILL RIVER