New York NPDES permit search
Status, expiry and violations for 467 municipal wastewater permits · issued by NYSDEC as SPDES permits
In short
How do I look up an NPDES permit in New York?
Search this page by permit number or plant name for a municipal plant’s permit status, expiry date and violations. For the official file, search DECinfo Locator. EPA’s ECHO database shows the monitoring results and violations of every permit. The 2,919 industrial permits in New York are listed in Klarifi with a free account.
Links to official sources checked September 2026.
Effective
316
Administratively continued
136
Expired
11
Plants with effluent violations, 3 years
404
Where to find official New York NPDES records
New York State Department of Environmental Conservation (NYSDEC) runs the NPDES program in New York under authorization from EPA Region 2, as the State Pollutant Discharge Elimination System (SPDES). It issues and enforces the permits and keeps the official file: applications, permits, fact sheets and monitoring reports. NYSDEC website ↗
permits · permit documents · enforcement
DEC’s map. Under Environmental Quality > Permits and Registrations tick the wastewater facilities (SPDES) layer, zoom in, search the address or town and click the facility for its permit documents.
permits · DMRs · inspections · violations · enforcement
EPA’s Enforcement and Compliance History Online. Search water facilities by permit number, name or city; the Detailed Facility Report lists inspections, violations and enforcement actions, and Effluent Charts plot monitoring results against the permit limits.
- Permit numbers
- DEC writes SPDES numbers as NY- plus seven digits (NY-0100001), and a facility also has a separate DEC permit number.
- Discharge monitoring reports
- Through EPA’s NetDMR.
- Violations and enforcement
- DEC’s SPDES compliance and enforcement reports ↗
Industrial and commercial NPDES permits in New York
Most NPDES permits are not held by municipal plants. EPA’s permit database lists 2,919 individual permits in force for industrial and commercial facilities in New York (manufacturers, food processors, mines, power plants, landfills), 231 of them major dischargers, plus 3,091 facilities covered by a general permit, mostly for stormwater. 456 of the individual permits recorded at least one effluent violation in the last three years.
| Facility | Permit | Status | Expires | Effluent violations |
|---|
Unlock 2,919 industrial permits in New York
Search every industrial and commercial discharger in New York by name or permit number, with permit status, expiry and violation history. Free with a Klarifi account.
Industrial and commercial NPDES permits in New York: permits in force (effective or administratively continued) held by facilities EPA does not class as publicly owned treatment works or federal facilities. Source: EPA ICIS-NPDES via Klarifi, October 2026.
Violations at New York wastewater plants
404 of the 467 municipal plants on this page recorded at least one effluent violation, a monitored value above a permit limit, in the last three years, and 417 had a violation of any kind, including late or missing monitoring reports. Each plant’s page shows its own count. EPA’s enforcement records list 298 formal cases naming New York wastewater plants, 46 of them since fiscal year 2020, with $2.9 million in penalties assessed. Enforcement cases in New York →
Permit renewals by year
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.
2029: 65 permits
2030: 71 permits
2031: 61 permits
Largest permit holders in New York
| Facility | City | Avg flow (MGD) | Design (MGD) | NPDES permit | Status | Expires | Violations (3y) |
|---|---|---|---|---|---|---|---|
| Newtown Creek Water Pollution Control Plant | Brooklyn | 187.2 | 310 | NY0026204 | Effective | Jun 2027 | 4 |
| NYC-DEP Wards Island WPCP | Manhattan | 182.4 | 275 | NY0026131 | Effective | Jun 2027 | 26 |
| Hunts Point Water Pollution Control Plant | Bronx | 123.8 | 200 | NY0026191 | Effective | Jun 2027 | 11 |
| Bird Island STP | Buffalo | — | 180 | NY0028410 | Effective | May 2031 | 24 |
| Nycdep - Bowery Bay WRRF | Astoria | 95.2 | 150 | NY0026158 | Effective | Jun 2027 | 8 |
| 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 | 65.64 | 120 | NY0026689 | Administratively continued | May 2019 | 29 |
| Coney Island Water Pollution Control Plant | Brooklyn | 80.1 | 110 | NY0026182 | Effective | Jun 2027 | 8 |
| NYC-DEP North River WPCP | New York | 107.6 | — | NYR00E625 | Effective | Dec 2030 | 2 |
New York NPDES permits: questions
NPDES permit search in other states
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 12, 2026.
Wastewater terms: NPDES permit · POTW · Significant industrial user · MGD · Equalization tank · Centrate · all terms