Who issues NPDES permits in New York?

New York State Department of Environmental Conservation issues and enforces NPDES permits for wastewater discharges in New York. Klarifi tracks 461 permits held by publicly owned treatment plants in the state.

How many NPDES permits in New York are expired or administratively continued?

136 permits are administratively continued (the plant applied for renewal and the old permit stays in force) and 11 are recorded as expired, out of 461 permits tracked. 310 are effective.

How many New York wastewater permits come up for renewal soon?

41 in 2026, 52 in 2027 and 47 in 2028. Each year has its own renewal calendar with the plants listed.

How do I look up an NPDES permit number?

Enter the permit number (two letters and seven characters, for example TX0021873) or the plant name in the lookup on the NPDES page; each result opens the plant profile with status, expiry, design flow and the three-year violation count.

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NPDES permits in New York

Name: NPDES permits held by wastewater treatment plants in New York
Creator: Klarifi
License: https://klarifi.io/terms-of-service

461 permits held by publicly owned wastewater treatment plants · issued by NYSDEC

Effective

310

Administratively continued

136

Expired

Total tracked

461

New York State Department of Environmental Conservation (NYSDEC) runs the NPDES program in New York under delegation from EPA Region 2, issuing and enforcing the discharge permits listed here. Klarifi tracks 461 permits held by publicly owned treatment plants in the state, with status, expiry, design flow and three-year compliance for each. Agency website →

An NPDES permit runs for five years. To keep discharging, a plant must apply for renewal at least 180 days before the expiry date, and the renewed permit usually arrives with tighter effluent limits, new monitoring requirements or a compliance schedule. That is why the year a permit expires is the year a plant starts budgeting for upgrades: nutrient removal, disinfection, capacity or controls.

Permit renewals by year

2026: 41 permits →2027: 52 permits →2028: 47 permits →

2029: 64 permits

2030: 69 permits

2031: 56 permits

Largest permit holders in New York

The 25 largest publicly owned wastewater treatment plants in New York by permitted design flow, with NPDES permit number, status and expiry. Source: EPA ICIS-NPDES via Klarifi.
Facility	City	Avg flow (MGD)	Design (MGD)	NPDES permit	Status	Expires	Violations (3y)
Newtown Creek Water Pollution Control Plant	Brooklyn	188	310	NY0026204	Effective	Jun 2027	5
NYC-DEP Wards Island WPCP	Manhattan	174	275	NY0026131	Effective	Jun 2027	25
Hunts Point Water Pollution Control Plant	Bronx	109	200	NY0026191	Effective	Jun 2027	11
Bird Island STP	Buffalo	—	180	NY0028410	Effective	May 2031	25
Nycdep - Bowery Bay WRRF	Astoria	94	150	NY0026158	Effective	Jun 2027	10
Frank E Van Lare Wastewater Treatment	Rochester	—	135	NY0028339	Administratively continued	Jul 2019	3
Owls Head Water Pollution Control Plant	Brooklyn	88	120	NY0026166	Effective	Jun 2027	9
Westchester Co Of - Yonkers Joint Waste Water Treatment Plant	Yonkers	55	120	NY0026689	Administratively continued	May 2019	29
Coney Island Water Pollution Control Plant	Brooklyn	83	110	NY0026182	Effective	Jun 2027	8
NYC-DEP North River WPCP	New York	110	—	NYR00E625	Effective	Dec 2030	2
Jamaica Water Pollution Control Plant	Jamaica	70	100	NY0026115	Effective	Jun 2027	10
NYC DEP 26 Ward WPCP	Brooklyn	43	85	NY0026212	Effective	Jun 2027	13
Tallman Island Wastewater Treatment Plant	Queens	57	80	NY0026239	Effective	Jun 2027	2
Cedar Creek WPCP	Wantagh	62.2	72	NY0026859	Administratively continued	Jan 2026	12
Bay Park Sewage Treatment Plant	East Rockaway	48.5	70	NY0026450	Administratively continued	Jan 2026	4
Nycdep - Red Hook WPCP	Brooklyn	28	60	NY0027073	Effective	Jun 2027	2
Port Richmond Water Pollution Control Plant	Staten Island	21	60	NY0026107	Effective	Jun 2027	4
City Of Niagara Falls Wastewater Treatment Plant	Niagara Falls	19.6	48	NY0026336	Administratively continued	Oct 2018	2
New York (c) - Rockaway WPCP	Rockaway Park	20	45	NY0026221	Effective	Jun 2027	3
Nycdep - Oakwood Beach WPCP	Staten Island	25.4	39.9	NY0026174	Effective	Jun 2027	6
Bergen Point STP & Bergen Ave Dock	W Babylon	26.7	30.5	NY0104809	Administratively continued	Dec 2019	81
Tonawanda (t) Sd#2 WWTP	Tonawanda	11.7	30	NY0026395	Administratively continued	Jun 2019	9
Albany County Sewer District - South Plant	Albany	45.11	29	NY0026867	Effective	Feb 2030	49
Rensselaer County Sd#1 WWTP	Troy	15.63	24	NY0087971	Effective	May 2030	9
Lockport (c) WWTP	Lockport	6.55	22	NY0027057	Administratively continued	Aug 2017	13

All 461 plants in New York →

NPDES permits 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 September 11, 2026.

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