How many wastewater treatment plants are there in New York?

Klarifi tracks 467 publicly owned wastewater treatment plants in New York with a combined average flow of 1,928 million gallons per day, serving about 14,078,711 residents. 117 of them treat more than 1 MGD and 30 more than 10 MGD.

What is the largest wastewater treatment plant in New York?

Newtown Creek Water Pollution Control Plant in Brooklyn is the largest plant in New York by average flow, treating about 187.2 MGD.

What treatment technologies are common in New York?

46 of New York's plants use lagoon systems and 138 have biogas or anaerobic digestion infrastructure, based on Klarifi's aerial imagery review.

How many NPDES permits in New York are up for renewal?

39 permits held by New York plants expire in 2026 and 52 in 2027. Renewals typically bring new limits and trigger upgrade projects.

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Wastewater treatment plants in New York

Name: Wastewater treatment plants in New York
Creator: Klarifi
License: https://klarifi.io/terms-of-service

467 facilities · 1,928 MGD combined flow

Klarifi tracks 467 publicly owned wastewater treatment plants in New York with a combined average flow of 1,928 MGD, serving about 14,078,711 residents. 117 plants treat more than 1 MGD and 30 more than 10 MGD; 46 use lagoon systems and 138 have digesters or biogas infrastructure. The largest is Newtown Creek Water Pollution Control Plant in Brooklyn at 187.2 MGD. 39 NPDES permits expire this year and 52 next year.

Every plant below links to a profile with average and design flow, the NPDES permit and its expiry, a three-year compliance snapshot and the capital projects planned in its city. Treatment technology and verified contacts are shown with a free Klarifi account. Showing facilities 1–200 of 467 by average flow — browse the rest with the page links below.

467 plant locations in New York; dot size follows average flow. Boundaries: U.S. Census Bureau.

NPDES permits and renewals in New York

Every plant discharges under an NPDES permit that is renewed every five years, usually with tighter limits. The renewal year is the year a plant budgets for upgrades.

All NPDES permits in New York →39 permits expiring in 2026 →52 permits expiring in 2027 →48 permits expiring in 2028 →Find plants near you on the map →

Largest wastewater treatment plants in New York

The 10 largest publicly owned wastewater treatment plants in New York by average flow, with NPDES permit, expiry and three-year violation count. Source: EPA ICIS-NPDES via Klarifi.
Facility	City	Avg flow (MGD)	Design (MGD)	NPDES permit	Expires	Violations (3y)
Newtown Creek Water Pollution Control Plant	Brooklyn	187.2	310	NY0026204	Jun 2027	4
NYC-DEP Wards Island WPCP	Manhattan	182.4	275	NY0026131	Jun 2027	26
Hunts Point Water Pollution Control Plant	Bronx	123.8	200	NY0026191	Jun 2027	11
NYC-DEP North River WPCP	New York	107.6	—	NYR00E625	Dec 2030	2
Nycdep - Bowery Bay WRRF	Astoria	95.2	150	NY0026158	Jun 2027	8
Owls Head Water Pollution Control Plant	Brooklyn	88	120	NY0026166	Jun 2027	9
Coney Island Water Pollution Control Plant	Brooklyn	80.1	110	NY0026182	Jun 2027	8
Jamaica Water Pollution Control Plant	Jamaica	74.6	100	NY0026115	Jun 2027	11
Westchester Co Of - Yonkers Joint Waste Water Treatment Plant	Yonkers	65.64	120	NY0026689	May 2019	29
Cedar Creek WPCP	Wantagh	63.14	72	NY0026859	Jan 2026	12

Treatment technology for each plant is shown with a free Klarifi account. Create one →

The 50 largest plants in New York →EPA enforcement actions in New York →New York capital improvement plans →

New York plants by treatment technology

Activated sludge and clarifiers (179)Anaerobic digesters and biogas (138)Lagoon systems (46)Oxidation ditches (28)

All 467 plants in New York

Facility	City	Flow (MGD)
Newtown Creek Water Pollution Control Plant	Brooklyn	187.2
NYC-DEP Wards Island WPCP	Manhattan	182.4
Hunts Point Water Pollution Control Plant	Bronx	123.8
NYC-DEP North River WPCP	New York	107.6
Nycdep - Bowery Bay WRRF	Astoria	95.2
Owls Head Water Pollution Control Plant	Brooklyn	88
Coney Island Water Pollution Control Plant	Brooklyn	80.1
Jamaica Water Pollution Control Plant	Jamaica	74.6
Westchester Co Of - Yonkers Joint Waste Water Treatment Plant	Yonkers	65.64
Cedar Creek WPCP	Wantagh	63.14
Tallman Island Wastewater Treatment Plant	Queens	57.8
Bay Park Sewage Treatment Plant	East Rockaway	48.73
Albany County Sewer District - South Plant	Albany	43.24
NYC DEP 26 Ward WPCP	Brooklyn	39.7
Nycdep - Red Hook WPCP	Brooklyn	27.5
Bergen Point STP & Bergen Ave Dock	W Babylon	27.44
City Of Niagara Falls Wastewater Treatment Plant	Niagara Falls	27.15
Nycdep - Oakwood Beach WPCP	Staten Island	26.56
Binghamton-Johnson (c) Jnt STP	Vestal	26.42
Port Richmond Water Pollution Control Plant	Staten Island	23
Tonawanda (t) Sd#2 WWTP	Tonawanda	21.03
Rensselaer County Sd#1 WWTP	Troy	20.34
Jamestown WWTP	Jamestown	20.06
Erie County Southtowns Sewage Treatment Plant	Buffalo	19.51
New York (c) - Rockaway WPCP	Rockaway Park	18.8
NW Quadrant Pure Waters Dist WWTP	Hilton	16.26
Schenectady (c) STP	Schenectady	13.23
Lockport (c) WWTP	Lockport	12.92
Mamaroneck (v) Sanitary Sd	Mamaroneck	12.11
New Rochelle STP	New Rochelle	11.16
Watertown Pollution Control Plant	Watertown	9.41
Auburn - C STP	Auburn	8.34
Village Of Endicott Water Polution Control Plant	Endicott	7.76
Amsterdam (c) WWTP	Amsterdam	7.72
North Tonawanda Wastwater Treatment Facility	North Tonawanda	7.42
City Of Poughkeepsie Water Pollution Control Plant	Poughkeepsie	7.39
Newburgh (c) WWTP	Newburgh	6.73
Rome Municipal STP	Rome	6.69
Big Sister Creek WRRF	Angola	6.58
Plattsburgh (c) WPCP	Plattsburgh	6.49
Orangetown Town Of Sewer Dept	Orangeburg	6.33
Peekskill Wastewater Treatment Plant	Peekskill	6.29
Oak Orchard WWTP	Clay	6.29
Gloversville-Johnstown Joint WWTP	Johnstown	6.16
Le Roy R Summerson WWTF	Cortland	5.66
Ocsd#1 - Harriman Sewage Treatment Plant	Harriman	5.6
Batavia (c) STP	Batavia	5.32
Middletown City Of Sewage Treatment Plt	Middletown	4.84
Long Beach (c) WPCP	Long Beach	4.72
Kingston (c) WWTP	Kingston	4.33
Little Falls Waste Water Treatment Plant	Little Falls	4.23
Haverstraw Joint Regional STP	West Haverstraw	4.22
Ossining Sanitary Sd WWTP	Ossining	4.2
New Windsor STP	Newburgh	4.15
Baldwinsville Seneca Knolls	Baldwinsville	4.05
Cedar Hill WPCP	Selkirk	3.99
Wetzel Road WWTP	Clay	3.88
Olean (c) WWTP	Olean	3.73
Glens Falls STP	Glens Falls	3.72
Blind Brook Sd WWTP	Rye	3.58
Oswego (c) West Side WWTF	Oswego	3.54
Marsh Creek WWTP	Geneva	3.49
Grand Island Wastewater Treatment Plant	Grand Island	3.32
Hornell City Water Pollution Control Plant	Hornell	3.26
City Of Beacon Wastewater Treatment Facility	Beacon	3.17
City Of Ogdensburg Wastewater Treatment Plant	Ogdensburg	3.16
Oneida (c) STP	Oneida	3.1
Canandaigua - C STP	Canandaigua	2.89
Dunkirk Water Filtration Plant	Dunkirk	2.55
Village Of Great Neck STP	Great Neck	2.54
South & Ctr Chautauqua L WWTP	Celoron	2.5
Farmington T STP	Victor	2
Oneonta WWTP	Oneonta	1.99
Washington Co Sd#2 WWTP	Fort Edward	1.97
Niskayuna (t) Sd#6 WWTP	Niskayuna	1.95
Waterloo (v) STP	Waterloo	1.91
Medina (v) WWTP	Medina	1.84
Clinton (v) WWTP	Clinton	1.79
Newark - V Waste Hauling	Newark	1.77
Fulton (c) STP	Fulton	1.76
Yorktown Heights Sd WWTP	Yorktown Hgts	1.76
Suffolk Co Sd#21 Suny	Stony Brook	1.7
South Fallsburg (t) WWTP	South Fallsburg	1.66
Tri-Municipal WWTP	Wappingers Falls	1.63
Village Of Albion Jmipcf	Albion	1.63
Malone (v) WWTP	Malone	1.59
Huntington Sewer District STP	Huntington	1.56
Cayuga Heights (v) WWTP	Ithaca	1.55
Western Wayne County Regional Wastewater Treatment Plant	Palmyra, Town Of	1.4
West Carthage WPCF	Carthage	1.38
Monticello (v) STP	Monticello	1.37
Potsdam (v) WPCP	Potsdam	1.36
City Of Salamanca WWTP	Salamanca	1.33
Canastota Village WPC	Canastota	1.32
Gouverneur (v) WWTF	Gouverneur	1.28
Village Of Walden STP	Montgomery	1.26
Dansville - V STP	Dansville	1.25
East Oneida Lake Sd Wwt Fac	Sylvan Beach	1.18
Norwich (c) STP	Norwich	1.17
Wellsville (v) WWTP	Wellsville	1.17
Ellicottville (v) STP	Ellicottville	1.16
Gowanda (v) STP	Gowanda	1.16
Ticonderoga Sd#5 WPCP	Ticonderoga	1.15
Penn Yan (v) STP	Penn Yan	1.14
Ulster (t) Sd STP	Kingston	1.13
Corning (c) WWTP	Corning	1.13
Tupper Lake (v) WPCP	Tupper Lake	1.13
Lloyd Highland Sewer District STP	Highland	1.1
Goshen (v) WWTF	Goshen	1.1
Coxsackie (v) STP	Coxsackie	1.1
Avon - V STP	Avon	1.09
Saranac Lake (v) WPCP	Saranac Lake	1.09
Village Of Genesco WWTP	Geneseo	1.08
Cornwall (t) WWTP	Cornwall	1.07
Westfield (v) WPCF	Westfield	1.07
Oyster Bay WRRF	Oyster Bay	1.03
Conesus Lake County Sewer District	Lakeville	1.02
Riverhead Sewer District WWTF	Riverhead	0.99
Stony Point (t) STP	Stony Point	0.98
Belgrave WPCP	Great Neck	0.96
Lake Placid (v) WPCP	Lake Placid	0.96
Kiryas Joel (v) WWTP	Monroe	0.96
Owego WPCP #2	Apalachin	0.96
Herkimer (v) WWTP	Herkimer	0.95
Attica Wastewater Treatment Plant	Attica	0.95
Canton WWTP	Canton	0.94
Greenport (t) Sd 1 STP	Hudson	0.92
Springville (v) WWTP	Springville	0.92
Highland Falls (v) WWTP	Highland Falls	0.92
Ontario (t) STP	Ontario	0.9
Rotterdam (t) Sd #2 STP	Schenectady	0.9
Suffern (v) STP	Suffern	0.89
Walton - V WWTP	Walton	0.88
Perry (v) WWTP	Perry	0.88
Waterford Waste Hauler	Waterford	0.87
Newfane (t) WWTP	Olcott	0.87
Silver Creek (v) WWTP	Silver Creek	0.86
Liberty (v) WWTF	Liberty	0.83
Chittenango (v) STP	Chittenango	0.83
Catskill (v) WWTP	Catskill	0.82
New Paltz WWTP	New Paltz	0.8
Erwin (t) WWTP	Painted Post	0.8
Dolgeville (v) WWTP	Dolgeville	0.76
Carmel Sewer District #2 WWTP	Carmel	0.71
Granville (v) WWTP	Granville	0.7
Rouses Point (v) WWTP	Rouses Point	0.7
Franklinville (v) WWTF	Franklinville	0.69
Warwick (v) WWTP	Warwick	0.69
Bath WWTP	Bath	0.68
Warsaw (v) STP	Warsaw	0.68
Village Of Whitehall Wastewater Treat	Whitehall	0.63
Coeymans-Ravena WPCF	Coeymans	0.61
Catharine Valley Water Reclamation Facility	Watkins Glen	0.6
Cazenovia WWTP	Cazenovia	0.59
Sidney Vill Water Pollution Control Plant	Sidney	0.59
Chenango (t) Sd#10	Binghamton	0.58
Fonda - Fultonville Joint WWTP	Fonda	0.58
Saugerties (v) Dock Street STP	Saugerties	0.58
Clayton (v) STP	Clayton	0.57
Chateaugay (v) WWTP	Chateaugay	0.57
Hoosick Falls WWTP	Hoosick Falls	0.57
Fishkill (v) STP	Fishkill	0.56
Vernon (v) STP	Vernon	0.55
Moravia (v) STP	Moravia	0.52
Lake George STP	Lake George	0.52
Akron (v) WWTP	Akron	0.52
Owego (v) STP	Owego	0.52
Middleport STP	Middleport	0.51
Alden (v) WWTP	Alden	0.51
Avon WWTP	Woodridge	0.51
Leroy - V WWTP	Leroy	0.5
Washingtonville (v) WWTP	Washingtonville	0.5
Hamilton (v) WPCP	Hamilton	0.49
Lyons (t) WWTP	Lyons	0.49
Montgomery Co Sd#1 STP	Nelliston	0.48
Dannemora (v) STP	Dannemora	0.48
Cooperstown (v) WWTP	Cooperstown	0.47
Arcade (v) STP	Arcade	0.45
Camden (v) WWTP	Camden	0.45
Phoenix (v) STP	Phoenix	0.45
Cuba (v) WWTF	Cuba	0.44
Honeoye Lake Co Consolidated Sd	Honeoye	0.44
Waverly (v) STP	Waverly	0.44
Deposit (v) WPCP	Deposit	0.42
North Chautauqua Lake Sd WWTF	Mayville	0.42
Napanoch Sewer Imp Area	Napanoch	0.42
Alfred Wastewater Treatment Plant	Alfred	0.41
Norwood (v) WWTP	Norwood	0.41
Manchester-Shortville Jnt STP	Manchester	0.41
Brownville (v) STP	Brownville	0.4
Patchogue (v) WWTP	Patchogue	0.4
(t) Moriah WWTF	Moriah	0.4
Honeoye Falls (v) WWTP	Honeoye Falls	0.39
Canajoharie (v) WWTP	Canajoharie	0.38
Sackets Harbor (v) STP	Sackets Harbor	0.37
Atlantic Beach WWTP	Atlantic Beach	0.37
Ellenville (v) STP	Ellenville	0.36
Holley (v) STP	Holley	0.36
Victor (v) STP	Victor	0.36
Sherburne (v) STP	Sherburne	0.36

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Wastewater treatment in New York: questions

Sources and methodology

Flow, permit and violation figures come from the EPA's ICIS-NPDES discharge monitoring records. Population served comes from the Clean Watersheds Needs Survey 2022. Treatment structures are identified by Klarifi's review of aerial imagery, and capital improvement projects are extracted from published municipal budget documents. Violations are counted over the last three years of monitoring reports.

Data refreshed October 26, 2026.

Wastewater terms: WWTP · POTW · MGD · NPDES permit · Lift station · Inflow and infiltration · all terms

Cite this page

Journalists, researchers and educators are welcome to quote these figures. Please credit Klarifi as the source and link to this page.

Klarifi. “Wastewater treatment plants in New York.” Updated October 26, 2026. https://klarifi.io/facilities/new-york

Need a custom cut of the data for a state, a county or a list of plants? Email info@klarifi.io.

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