How many wastewater permits expire in Pennsylvania in 2027?

108 NPDES permits held by publicly owned wastewater treatment plants in Pennsylvania expire in 2027, covering a combined average flow of 53 MGD. The busiest month is Mar 2027 with 15 expiries.

What happens when an NPDES permit expires?

The plant must have applied for renewal at least 180 days before the expiry date. If the agency has not reissued the permit by then, the old permit is administratively continued and stays enforceable. The reissued permit typically carries updated effluent limits based on the latest water-quality standards, which is what drives upgrade projects.

Which is the largest plant with a permit expiring in Pennsylvania in 2027?

Gr Hazleton Jt Sew Auth WWTP in Hazleton, treating about 6.71 MGD under permit PA0026921, expiring Feb 2027.

How do I get contacts for the plants on this list?

Every plant links to its profile with flow, permit and compliance data. Treatment technology and verified decision-maker contacts for each plant, and the same list for every state and year, are available in Klarifi with a free account.

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Pennsylvania wastewater permits expiring in 2027

Name: Pennsylvania NPDES permits expiring in 2027
Creator: Klarifi
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108 NPDES permits · 53 MGD combined average flow

108 publicly owned wastewater treatment plants in Pennsylvania hold NPDES permits that expire during 2027, issued by Pennsylvania Department of Environmental Protection. 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.

Other years:

2026 (95)2028 (73)All Pennsylvania NPDES permits →

Publicly owned wastewater treatment plants in Pennsylvania with NPDES permits expiring in 2027, from EPA ICIS-NPDES records. Refreshed on every release.
Facility	City	Avg flow (MGD)	NPDES permit	Expires	Violations (3y)
Swatara Twp STP	Hummelstown	3.37	PA0026735	Jan 2027	2
Brown Twp STP	Reedsville	0.39	PA0028088	Jan 2027	15
Earl Twp STP	New Holland	0.33	PA0086304	Jan 2027	2
Moscow Sew Auth STP	Moscow	0.19	PA0061123	Jan 2027	5
Shinglehouse Boro Water Dept	Shinglehouse	0.18	PA0036773	Jan 2027	18
Confluence Boro STP	Confluence	0.03	PA0038164	Jan 2027	22
Gr Hazleton Jt Sew Auth WWTP	Hazleton	6.71	PA0026921	Feb 2027	6
Riverview Sani Auth STP	Moon Twp	2.1	PA0026352	Feb 2027	0
Kennett Square Boro WWTP	Kennett Square	0.63	PA0024058	Feb 2027	264
Highspire Boro - STP	Highspire	0.63	PA0024040	Feb 2027	2
Fairchance Georges STP	Smithfield	0.63	PA0096342	Feb 2027	11
W Branch Sew Auth STP	Northern Cambria	0.4	PA0205869	Feb 2027	30
Twin Boroughs STP	Mifflin	0.35	PA0023264	Feb 2027	1
East Hanover Twp Dairy Ln STP	Grantville	0.18	PA0247464	Feb 2027	13
Hawley Area Auth	Hawley	0.11	PA0060330	Feb 2027	5
Union Twp Leb Co Lickdale STP	Jonestown	0.06	PA0083607	Feb 2027	5
Herndon Borough Jackson Twp Jt Muni Auth WWTP	Herndon	0.03	PA0228800	Feb 2027	2
Phoenixville Boro STP	Phoenixville	1.7	PA0027154	Mar 2027	0
Upper Dublin WWTP	Fort Washington	0.74	PA0029441	Mar 2027	8
Pine Grove Joint Treatment Authority WWTP	Pine Grove	0.61	PA0020915	Mar 2027	2
Manheim STP	Manheim	0.59	PA0020893	Mar 2027	2
Fish Creek STP	Jamison	0.54	PA0050148	Mar 2027	0
Butler Twp - St Johns STP	Drums	0.5	PA0046388	Mar 2027	0
Ridley Creek STP	West Chester	0.27	PA0050504	Mar 2027	0
Williamsburg Munic Auth-Cl2 Bldg	Williamsburg	0.13	PA0021539	Mar 2027	3
Willolake STP	Canonsburg	0.07	PA0090018	Mar 2027	0
Perry Twp Municipal Auth STP	Star Junction	0.06	PA0252638	Mar 2027	0
Pennsbury Village STP	Pittsburgh	0.03	PA0047228	Mar 2027	9
Dogwood Acres Mhp STP	Derry	0.03	PA0094455	Mar 2027	0
Elderton STP	Elderton	0.02	PA0093033	Mar 2027	7
Quaker Lake WWTP	Brackney	0.004	PA0060623	Mar 2027	0
St. Andrews Brae STP	Chester Springs	0.0018	PA0058378	Mar 2027	9
Elizabethtown STP	Elizabethtown	2	PA0023108	Apr 2027	7
New Freedom Boro Auth WWTP	New Freedom	1.2	PA0043257	Apr 2027	25
Harvey Avenue STP	Doylestown	1.14	PA0021172	Apr 2027	0
Eureka WWTP	North Wales	1.04	PA0053180	Apr 2027	25
Mifflinburg WWTP	Mifflinburg	0.65	PA0028461	Apr 2027	0
Covi Douglas STP	Coraopolis	0.19	PA0096318	Apr 2027	14
North East Boro WTP	North East	0.16	PA0037923	Apr 2027	1
Paradise Twp STP	Paradise	0.12	PA0083470	Apr 2027	45
Loysville STP	Loysville	0.12	PA0043494	Apr 2027	86
Atglen Borough STP	Atglen	0.07	PA0024651	Apr 2027	39
Montour Township STP	Bloomsburg	0.06	PA0209058	Apr 2027	1
Big Run Area WWTP	Punxsutawney	0.06	PA0223107	Apr 2027	3
Perkiomen Crossing STP	Frederick	0.05	PA0054810	Apr 2027	13
Eastern Snyder Cnty Regional Auth STP	Selinsgrove	1.16	PA0110582	May 2027	2
North Middleton Auth STP	Carlisle	0.73	PA0024384	May 2027	2
Annville Twp STP	Annville	0.62	PA0021806	May 2027	4
Mt Holly Springs STP	Mt Holly Springs	0.33	PA0023183	May 2027	17
Macoby Creek STP	Pennsburg	0.16	PA0055875	May 2027	5
Yatesboro STP	Yatesboro	0.12	PA0216992	May 2027	24
Christiana Boro WWTF	Atglen	0.11	PA0025399	May 2027	22
Chicora Boro Sewer Authority	Chicora	0.11	PA0221708	May 2027	0
Clay Twp - Hopeland STP	Stevens	0.02	PA0081213	May 2027	2
Scma Deer Lake WWTP	Orwigsburg	0.49	PA0042170	Jun 2027	0
Ellport Boro STP	Ellwood City	0.45	PA0038814	Jun 2027	6
Bridgeport Boro STP	Bridgeport	0.39	PA0020397	Jun 2027	28
Lemoyne STP	Lemoyne	0.26	PA0026441	Jun 2027	2
Kulpmont-Marion Hghts Joint Muni Auth	Kulpmont	0.24	PA0020338	Jun 2027	12
Northern Lebanon Cnty Jonestown STP	Jonestown	0.23	PA0080748	Jun 2027	0
Fredonia Boro WWTP	Fredonia	0.16	PA0020044	Jun 2027	6
Georges Crk Muni Auth STP	Smithfield	0.09	PA0218391	Jun 2027	4
Beaver Meadows Municipal Authority	Beaver Meadows	0.08	PA0021199	Jun 2027	0
Harrison Twp WWTP	Harrison Valley	0.08	PA0228176	Jun 2027	3
Salisbury Boro STP	Salisbury	0.08	PA0021628	Jun 2027	11
Roulette Township STP	Roulette	0.07	PA0209066	Jun 2027	97
Newell STP	Newell	0.05	PA0020656	Jun 2027	0
Pine Twp STP	Templeton	0.01	PA0252760	Jun 2027	0
Blossburg Municipal Authority Wastewater Treatment Plant	Blossburg	—	PA0020036	Jun 2027	2
Uniontown STP	Uniontown	6.09	PA0027219	Jul 2027	6
Martinsburg STP	Martinsburg	0.36	PA0028347	Jul 2027	3
Highland Park STP	Sellersville	0.11	PA0058271	Jul 2027	3
Albion Boro WWTP	Albion	0.83	PA0023124	Aug 2027	1
Mount Union Borough	Mount Union	0.51	PA0020214	Aug 2027	3
Conyngham Boro Auth WWTP	Sugarloaf	0.46	PA0042048	Aug 2027	51
Williamstown Boro STP	Williamstown	0.18	PA0021491	Aug 2027	59
Schwenksville Boro WWTP	Schwenksville	0.14	PA0020303	Aug 2027	10
East Providence Twp STP	Breezewood	0.07	PA0038733	Aug 2027	1
Shippingport Boro STP	Shippingport	0.02	PA0252492	Aug 2027	3
Milford-Trumbauersville WWTP	Spinnerstown	0.64	PA0042021	Sep 2027	9
Middle Smithfield Twp WWTP	East Stroudsburg	0.26	PA0060089	Sep 2027	9
Saxton STP	Saxton	0.22	PA0025381	Sep 2027	9
Carrolltown Boro STP	Carrolltown	0.09	PA0111201	Sep 2027	6
Chestnut Ridge Area WWTP	New Paris	0.51	PA0087661	Oct 2027	10
14 Mile Run STP	Latrobe	0.34	PA0252999	Oct 2027	2
S Woodbury Twp STP	Loysburg	0.29	PA0088226	Oct 2027	12
Chapel Hill WWTP	Huntingdon Valley	0.13	PA0046868	Oct 2027	10
Nescopeck Boro	Nescopeck	0.07	PA0020745	Oct 2027	1
E St Clair Twp Fishertown STP	New Paris	0.05	PA0082694	Oct 2027	0
E St Clair Twp Stone Cr STP	Fishertown	0.02	PA0082732	Oct 2027	0
Pottsgrove STP	Milton	0.02	PA0228478	Oct 2027	3
West Hanover Twp STP	Harrisburg	0.5	PA0085511	Nov 2027	8
Patton Borough STP	Patton	0.46	PA0110469	Nov 2027	7
Sci Somerset STP	Somerset	0.28	PA0205681	Nov 2027	13
Bci Municipal Authority STP	Irvona	0.17	PA0114936	Nov 2027	0
Alexandria Porter STP	Alexandria	0.09	PA0043443	Nov 2027	5
Greenfield Twp Sew Auth	Carbondale	0.06	PA0061671	Nov 2027	45
Montgomery Run Backwash Treatment Fac	Clearfield	0.03	PA0228206	Nov 2027	11
Lower Mahanoy Twp Mun Auth	Dalmatia	0.03	PA0228231	Nov 2027	0
Greenwood Twp Muni Auth Sew Sys STP	Orangeville	0.0043	PA0113069	Nov 2027	1
Hanover Boro STP	Mcsherrystown	4	PA0026875	Dec 2027	2
Freedom Twp - STP	Duncansville	0.36	PA0110361	Dec 2027	1
Scma Gordon WWTP	Gordon	0.28	PA0062201	Dec 2027	1
Regional Water Pollution Control Facility	Houtzdale	0.17	PA0046159	Dec 2027	12
Hartley Twp Muni Auth WWTP	Laurelton	0.12	PA0043583	Dec 2027	21
Morrisville Water Filtration Plant	Yardley	0.05	PA0051292	Dec 2027	0
Longvue #2 STP	Pittsburgh	0.05	PA0028193	Dec 2027	8
Penns Creek Muni Auth	Penns Creek	0.04	PA0112933	Dec 2027	132

Pennsylvania permit renewals in 2027: 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: NPDES permit · POTW · Biological nutrient removal · Tertiary treatment · FOG · Equalization tank · 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. “NPDES permits expiring in 2027: Pennsylvania plants.” Updated October 26, 2026. https://klarifi.io/facilities/pennsylvania/permits-expiring/2027

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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