New York wastewater permits expiring in 2028
47 NPDES permits · 31 MGD combined average flow
47 publicly owned wastewater treatment plants in New York hold NPDES permits that expire during 2028, issued by New York State Department of Environmental Conservation. The table lists each plant with its permit number, expiry month, average flow, treatment technology and three-year violation count, in order of expiry.
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.
| Facility | City | Avg flow (MGD) | NPDES permit | Expires | Technology | Violations (3y) |
|---|---|---|---|---|---|---|
| Marcellus (v) WPCP | Marcellus | 0.15 | NY0020532 | Jan 2028 | Clarifiers | 3 |
| Kiamesha Lake Sd STP | Monticello | 0.23 | NY0030724 | Feb 2028 | Clarifiers, Aerated lagoons, Carrousels / oxidation ditches | 29 |
| Tuxedo Park (v) STP | Tuxedo Park | 0.09 | NY0031216 | Feb 2028 | — | 14 |
| Elma (t) Sd#5-Elma Meadows Subdivision | Elma | 0.01 | NY0033995 | Feb 2028 | — | 0 |
| Ocsd#1 - Harriman Sewage Treatment Plant | Harriman | 4.53 | NYR00A935 | Mar 2028 | Clarifiers, Uncovered lagoons, Carrousels / oxidation ditches, Biogas silos | 50 |
| Big Sister Creek WRRF | Angola | 2.74 | NYR00A952 | Mar 2028 | Clarifiers, Aerated lagoons, Biogas silos | 7 |
| Oyster Bay WRRF | Oyster Bay | 1.02 | NY0021822 | Mar 2028 | Biogas silos | 4 |
| Kiryas Joel (v) WWTP | Monroe | 0.8 | NY0250520 | Mar 2028 | — | 37 |
| Gouverneur (v) WWTF | Gouverneur | 0.52 | NY0020117 | Mar 2028 | Aerated lagoons | 12 |
| Carmel Sewer District #2 WWTP | Carmel | 0.58 | NY0031356 | Apr 2028 | Clarifiers | 10 |
| Owego WPCP #2 | Apalachin | 0.49 | NY0025798 | Apr 2028 | Clarifiers, Biogas silos | 9 |
| Coeymans-Ravena WPCF | Coeymans | 0.4 | NY0022772 | Apr 2028 | Clarifiers | 33 |
| Phoenix (v) STP | Phoenix | 0.2 | NY0020664 | Apr 2028 | — | 2 |
| Owego (t) Sd#1 | Owego | 0.18 | NY0022730 | Apr 2028 | Clarifiers, Uncovered lagoons, Biogas silos | 0 |
| Ohioville WWTP | New Paltz | 0.0081 | NY0109886 | Apr 2028 | — | 61 |
| Fishkill (v) STP | Fishkill | 0.41 | NY0060992 | May 2028 | — | 14 |
| Philmont (v) WWTP | Philmont | 0.1 | NY0030996 | May 2028 | Clarifiers | 5 |
| Port Byron (v) WWTP | Port Byron | 0.06 | NY0020338 | May 2028 | Clarifiers | 0 |
| Chenango (t) Sd#10 | Binghamton | 0.52 | NY0213781 | Jun 2028 | — | 67 |
| Sodus (v) STP | Sodus | 0.22 | NY0021482 | Jun 2028 | Clarifiers, Biogas silos | 77 |
| Oneonta WWTP | Oneonta | 1.49 | NY0031151 | Jul 2028 | Clarifiers, Biogas silos, Biogas balloons | 31 |
| Saugerties (v) Dock Street STP | Saugerties | 0.49 | NY0031208 | Jul 2028 | — | 25 |
| Brownville (v) STP | Brownville | 0.06 | NY0031232 | Jul 2028 | — | 7 |
| Lyons Falls (v) WWTF | Lyons Falls | 0.04 | NY0257737 | Jul 2028 | — | 75 |
| Norfolk (t) Sd#1 | Norfolk | 0.06 | NY0023604 | Aug 2028 | Uncovered lagoons | 20 |
| Elba (v) WWTP | Elba | 0.06 | NY0020907 | Aug 2028 | Aerated lagoons, Uncovered lagoons | 48 |
| Craneridgesewer Dist #1 | Glenwood | 0.02 | NY0036714 | Aug 2028 | — | 49 |
| Woodhull Wastewater Treatment Plant | Woodhull | 0.01 | NY0271934 | Aug 2028 | — | 52 |
| Northport (v) STP | Northport | 0.19 | NY0024881 | Sep 2028 | — | 8 |
| Pine Hill WWTP | Shandaken | 0.03 | NY0026557 | Sep 2028 | Clarifiers, Biogas silos | 0 |
| Hoosick Falls WWTP | Hoosick Falls | 0.47 | NY0024821 | Oct 2028 | — | 139 |
| Cooperstown (v) WWTP | Cooperstown | 0.39 | NY0023591 | Oct 2028 | Clarifiers, Biogas silos | 27 |
| Buchanan (v) WWTP | Buchanan | 0.24 | NY0029971 | Oct 2028 | Biogas balloons | 0 |
| Hammond (v) STP | Hammond | 0.01 | NY0033561 | Oct 2028 | Aerated lagoons | 29 |
| Suffolk Co Sd#21 Suny | Stony Brook | 2.09 | NY0206644 | Nov 2028 | Clarifiers, Carrousels / oxidation ditches | 4 |
| Canandaigua - C STP | Canandaigua | 1.69 | NY0025968 | Nov 2028 | Clarifiers, Biogas silos | 49 |
| Keeseville Wastewater Treatment Plant | Keeseville | 0.13 | NY0025097 | Nov 2028 | Biogas balloons | 4 |
| Castine Farms | Chazy | 0.02 | NY0255971 | Nov 2028 | — | 1 |
| City Of Poughkeepsie Water Pollution Control Plant | Poughkeepsie | 6.18 | NY0026255 | Dec 2028 | Clarifiers | 5 |
| New Windsor STP | Newburgh | 3 | NY0022446 | Dec 2028 | Clarifiers, Biogas balloons | 130 |
| Fulton (c) STP | Fulton | 0.49 | NY0026301 | Dec 2028 | Clarifiers, Biogas silos | 12 |
| Adams WWTP | Adams | 0.08 | NY0034771 | Dec 2028 | — | 43 |
| Orleans/alexandria Joint WWTP | Alexandria Bay | 0.07 | NY0258059 | Dec 2028 | Uncovered lagoons | 1 |
| Malden-On-Hudson Sd STP | Saugerties | 0.05 | NY0145556 | Dec 2028 | — | 3 |
| Remsen (v) WPCP | Remsen | 0.04 | NY0235776 | Dec 2028 | — | 61 |
| Riverview Landing STP | Clifton Park | 0.0064 | NY0131768 | Dec 2028 | — | 46 |
| Dillon Farms WWTP | Monticello | 0.0015 | NY0214507 | Dec 2028 | — | 25 |
New York permit renewals in 2028: 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.