How many wastewater permits expire in Ohio in 2028?

167 NPDES permits held by publicly owned wastewater treatment plants in Ohio expire in 2028, covering a combined average flow of 192 MGD. The busiest month is Feb 2028 with 22 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 Ohio in 2028?

Akron WRF in Akron, treating about 44.82 MGD under permit OH0023833, expiring Aug 2028.

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

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

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Ohio wastewater permits expiring in 2028

Name: Ohio NPDES permits expiring in 2028
Creator: Klarifi
License: https://klarifi.io/terms-of-service

167 NPDES permits · 192 MGD combined average flow

167 publicly owned wastewater treatment plants in Ohio hold NPDES permits that expire during 2028, issued by Ohio Environmental Protection Agency. 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 (114)2027 (186)All Ohio NPDES permits →

Publicly owned wastewater treatment plants in Ohio with NPDES permits expiring in 2028, from EPA ICIS-NPDES records. Refreshed on every release.
Facility	City	Avg flow (MGD)	NPDES permit	Expires	Technology	Violations (3y)
Rocky River Wastewater Treatment Plant	Rocky River	8.3	OH0030503	Jan 2028	Biogas silos, Biogas balloons	15
Madison WWTP No 1	Madison	2.01	OH0036790	Jan 2028	Clarifiers	54
Southwest Licking W & Sd Gale Rd Envir Ctrl Fac	Hebron	1.87	OH0113964	Jan 2028	Clarifiers, Carrousels / oxidation ditches	0
Twin City WWTP	Uhrichsville	0.99	OH0020079	Jan 2028	Clarifiers, Uncovered lagoons	0
Pickaway Correctional Institute	Orient	0.56	OH0054224	Jan 2028	—	475
New Lexington WWTP	New Lexington	0.55	OH0023531	Jan 2028	Clarifiers, Aerated lagoons, Carrousels / oxidation ditches	2
Bluffton WWTP	Bluffton	0.44	OH0020851	Jan 2028	Clarifiers, Biogas balloons	7
Brewster Village Pws	Brewster	0.31	OH0020567	Jan 2028	Clarifiers, Aerated lagoons, Uncovered lagoons	5
Quincy-Degraff STP	Quincy	0.14	OH0035882	Jan 2028	—	1
Willshire WWTP	Willshire	0.02	OH0031003	Jan 2028	—	140
Montezuma Club Island WWTP	Celina	—	OH0078441	Jan 2028	Uncovered lagoons	0
Chagrin Falls Meadow Lane WWTP	Chagrin Falls	0.58	OH0021741	Feb 2028	Clarifiers	25
Ada WWTP	Ada	0.49	OH0020583	Feb 2028	Clarifiers, Carrousels / oxidation ditches, Biogas balloons	8
West Union WWTP	West Union	0.42	OH0028088	Feb 2028	Uncovered lagoons, Carrousels / oxidation ditches	59
Roseville WWTP	Roseville	0.23	OH0099287	Feb 2028	Aerated lagoons	35
Sciotoville WWTP	Portsmouth	0.22	OH0027201	Feb 2028	—	9
Thornville WWTP	Thornville	0.11	OH0027723	Feb 2028	Clarifiers	58
Tuscarawas WWTP	Tuscarawas	0.09	OH0027855	Feb 2028	Aerated lagoons	0
Fort Recovery WWTP	Ft Recovery	0.09	OH0025160	Feb 2028	Aerated lagoons, Uncovered lagoons	27
Saint Henry WWTP	St Henry	0.09	OH0020028	Feb 2028	Aerated lagoons, Uncovered lagoons	3
Marshallville Village Pws-Marshallville Water Department	Marshallville	0.07	OH0022624	Feb 2028	—	72
Beaver WWTP & Collection System	Beaver	0.04	OH0041505	Feb 2028	Aerated lagoons, Uncovered lagoons	11
Beloit WWTP	Beloit	0.03	OH0024091	Feb 2028	Clarifiers	64
Rockbridge WWTP	Rockbridge	0.01	OH0120430	Feb 2028	Uncovered lagoons	40
Stacy Meadowcrest WWTP	Marietta	0.01	OH0099481	Feb 2028	—	23
Geneva Trailer Park	Geneva	0.0081	OH0134317	Feb 2028	—	0
Odot Parks 8-39 And 8-40 WWTP	Jefferson Twp.	0.0055	OH0085791	Feb 2028	—	8
Rio Grand WWTP	Painesville	0.0048	OH0092096	Feb 2028	—	2
Spring Valley Outdoors, Inc-Spring Valley Campground	Cambridge	0.0022	OH0127990	Feb 2028	—	11
Riverview Manor Mhp	Zanesville	0.0013	OH0127647	Feb 2028	—	0
Beaverdam WWTP	Beaverdam	—	OH0021318	Feb 2028	Aerated lagoons, Uncovered lagoons	5
Mcclure WTP	Mcclure	—	OH0053341	Feb 2028	Uncovered lagoons	2
Mt Blanchard WWTP	Mt Blanchard	—	OH0095079	Feb 2028	Uncovered lagoons	10
City Of Zanesville Wastewater Treatment Plant	Zanesville	5.91	OH0028240	Mar 2028	Clarifiers, Biogas silos	12
Upper Olentangy Water Reclamation Center	Delaware	3.68	OH0024911	Mar 2028	Uncovered lagoons	2
Galion WWTP	Galion	1.42	OH0025313	Mar 2028	Clarifiers, Aerated lagoons, Biogas silos, Biogas balloons	166
Celina WWTP	Celina	1.17	OH0020320	Mar 2028	Clarifiers, Uncovered lagoons, Carrousels / oxidation ditches	3
Pleasant Valley Regional Sd	Chillicothe	0.34	OH0050491	Mar 2028	Clarifiers, Carrousels / oxidation ditches	0
Athens Co., The Plains S.D. 1 Pws	The Plains	0.22	OH0050580	Mar 2028	Clarifiers	9
Sugarcreek WWTP	Sugarcreek	0.2	OH0027618	Mar 2028	Clarifiers, Carrousels / oxidation ditches	0
Smithfield WWTP	Smithfield	0.18	OH0050148	Mar 2028	Aerated lagoons	11
Pomeroy WWTP	Pomeroy	0.16	OH0021725	Mar 2028	—	12
Bremen WWTP	Bremen	0.08	OH0021491	Mar 2028	Aerated lagoons, Carrousels / oxidation ditches	8
Damascus WWTP	Damascus	0.04	OH0129658	Mar 2028	—	3
Odnr Pymatuning State Park	Andover	0.01	OH0037761	Mar 2028	—	0
Forty Corners Mobile Village-Forty Corners Mobile Vlg	Massillon	0.01	OH0129399	Mar 2028	—	14
Kerr Allotment WWTP	New Philadelphia	0.0052	OH0048437	Mar 2028	—	0
Mhp Holdings - Flora Llc	Harrison	0.0051	OH0132004	Mar 2028	—	6
Kenwood Village Mhp	Chillicothe	0.0003	OH0120715	Mar 2028	—	0
Eastern Ohio Regional WW Authority	Bellaire	1.74	OH0049999	Apr 2028	—	1
Springboro WWTP	Springboro	1.58	OH0027472	Apr 2028	Clarifiers, Carrousels / oxidation ditches	0
Conneaut WWTP	Conneaut	1.39	OH0024767	Apr 2028	Clarifiers, Biogas silos	12
City Of Bellevue WWTP	Bellevue	0.78	OH0020672	Apr 2028	—	10
Arcanum Water And Light Department (0819020226)	Arcanum	0.18	OH0020940	Apr 2028	—	3
Sabina WWTP	Sabina	0.18	OH0022128	Apr 2028	Clarifiers	14
Chauncey WWTP	Chauncey	0.07	OH0024368	Apr 2028	—	11
Fayette WWTP	Fayette	0.06	OH0025127	Apr 2028	—	26
Roaming Shores WWTP	Roaming Shores	0.04	OH0045659	Apr 2028	—	134
Nevada Village	Nevada	0.03	OH0058181	Apr 2028	—	37
Caledonia WWTP	Caledonia	0.03	OH0021750	Apr 2028	—	27
Rutland Regional Sd	Rutland	0.03	OH0050130	Apr 2028	—	27
Ohso Southington Mhp Llc	Southington	0.02	OH0107514	Apr 2028	—	8
Purtee Acres WWTP	Wheelersburg	0.02	OH0050865	Apr 2028	—	20
Empire WWTP	Empire	0.0056	OH0050539	Apr 2028	—	0
Linlare Ssd No 2	Bucyrus	0.0033	OH0079120	Apr 2028	—	6
Odot Rest Area 04-35 WWTP	Ravenna	0.002	OH0092495	Apr 2028	—	3
Bridge Lake Farm WWTP	Middlefield	0.001	OH0129411	Apr 2028	—	9
South Salem WWTP	South Salem	—	OH0127779	Apr 2028	Uncovered lagoons	0
City Of Canton	Canton	20.5	OH0024350	May 2028	—	1
South Point Village	South Point	1.14	OH0021814	May 2028	Clarifiers	61
Logan WWTP	Logan	0.86	OH0023388	May 2028	Clarifiers, Carrousels / oxidation ditches	0
Barnesville WWTP	Barnesville	0.31	OH0024015	May 2028	Clarifiers	4
Burton WWTP	Burton	0.12	OH0021580	May 2028	Uncovered lagoons	4
Pleasant Hill WWTP	Pleasant Hill	0.05	OH0029475	May 2028	Clarifiers, Carrousels / oxidation ditches	3
Dillonvale-Mt Pleasant	Dillonvale	0.04	OH0076546	May 2028	—	0
Newport W & Sd	Newport	0.03	OH0041173	May 2028	—	159
Rolling Hills Subdiv WWTP	Byesville	0.03	OH0075809	May 2028	—	168
Rivermoor Estates WWTP	Ravenna	0.01	OH0092045	May 2028	—	5
Rockwood Ledges WWTP	Kirtland	0.0066	OH0039080	May 2028	—	9
Kirtland Shenandoah Estates WWTP	Kirtland	0.0054	OH0039004	May 2028	—	28
Jefferson Twp Jr High Elem	Dayton	0.00063	OH0132250	May 2028	—	5
Birmingham Metal Products Inc	Birmingham	0.00043	OH0126730	May 2028	—	0
Lima WWTP	Lima	11.44	OH0026069	Jun 2028	Aerated lagoons, Uncovered lagoons, Cooling towers	35
Marysville WRF	Marysville	3.83	OH0136271	Jun 2028	Clarifiers, Aerated lagoons	7
Elkton WWTP	Lisbon	0.49	OH0122084	Jun 2028	Clarifiers, Carrousels / oxidation ditches	13
Canal Fulton Regional WWTP	Canal Fulton	0.4	OH0022047	Jun 2028	—	4
Elida WWTP	Elida	0.25	OH0024996	Jun 2028	Clarifiers, Uncovered lagoons	16
Pleasant City WWTP	Pleasant City	0.09	OH0128023	Jun 2028	—	20
Rock Creek WWTP & Sewer System	Rock Creek	0.03	OH0107204	Jun 2028	Aerated lagoons	59
Pleasant Park Mobile Court	Warren	0.0031	OH0107522	Jun 2028	—	57
Olentangy Environmental Control Center	Powell	3.41	OH0054399	Jul 2028	Clarifiers, Uncovered lagoons	49
Albany WWTP	Albany	0.09	OH0127809	Jul 2028	Clarifiers	4
Edison High School	Milan	0.002	OH0130567	Jul 2028	—	11
Odot Huron County Garage	Norwalk	0.00041	OH0122335	Jul 2028	—	11
Baltic WWTP	Baltic	—	OH0047783	Jul 2028	—	18
Cygnet WWTP	Cygnet	—	OH0029327	Jul 2028	Uncovered lagoons	9
Madison WWTP	Madison	—	OH0023515	Jul 2028	Clarifiers, Carrousels / oxidation ditches	0
Savannah WWTP	Savannah	—	OH0125270	Jul 2028	Uncovered lagoons	2
Akron WRF	Akron	44.82	OH0023833	Aug 2028	Clarifiers, Uncovered lagoons	0
Ironton WWTP	Ironton	1.39	OH0025852	Aug 2028	Clarifiers, Biogas silos	64
Bethesda WWTP	Bethesda	0.09	OH0021121	Aug 2028	Clarifiers, Carrousels / oxidation ditches	33
Lowell WWTP	Lowell	0.03	OH0020311	Aug 2028	—	7
Shawnee WWTP	Shawnee	0.02	OH0127671	Aug 2028	—	55
Kamp-A-Lott Campground	Bellefontaine	0.02	OH0133639	Aug 2028	—	14
Blackbrook Valley Estates	Mantua	0.0097	OH0038822	Aug 2028	—	7
Coble Village	Willard	0.0048	OH0125750	Aug 2028	—	34
Wayne Trace High School	Haviland	0.0025	OH0130630	Aug 2028	—	24
Norwalk Elks Lodge No 730 #2	Norwalk	0.000053	OH0126942	Aug 2028	—	8
Attica STP	Attica	—	OH0023957	Aug 2028	Uncovered lagoons	0
Continental WWTP	Continental	—	OH0021768	Aug 2028	Uncovered lagoons	6
Niles WWTP	Niles	3.43	OH0026743	Sep 2028	Clarifiers, Uncovered lagoons, Carrousels / oxidation ditches	9
Greenville WWTP	Greenville	1.19	OH0025429	Sep 2028	Clarifiers, Carrousels / oxidation ditches, Biogas silos	5
Geneva WWTP	Geneva	0.64	OH0020109	Sep 2028	Clarifiers, Biogas silos, Biogas balloons	5
Mt Orab WWTP	Mount Orab	0.5	OH0026646	Sep 2028	Clarifiers, Carrousels / oxidation ditches	0
New Matamoras WWTP	New Matamoras	0.05	OH0022331	Sep 2028	—	1
Odnr - Mohican State Forest WWTP	Perrysville	0.0022	OH0052558	Sep 2028	—	7
Riverbend Campground	Caledonia	0.0017	OH0132586	Sep 2028	—	5
Odotrest Area 04-42 WWTP	Columbus	0.0016	OH0088137	Sep 2028	—	7
Country Club Hills Property Owners Assoc WWTP	Wapakoneta	0.00051	OH0125423	Sep 2028	—	3
Modern Ice	Cincinnati	0.00027	OH0133795	Sep 2028	—	5
Waste Water Treatment Plant	Youngstown	20.84	OH0028223	Oct 2028	Biogas silos, Biogas balloons	231
Girard WWTP	Girard	1.97	OH0025364	Oct 2028	Clarifiers, Uncovered lagoons, Biogas silos	98
Canal Winchester WWTP	Canal Winchester	1.39	OH0024333	Oct 2028	Aerated lagoons	1
Campbell WWTP	Campbell	0.62	OH0024325	Oct 2028	Clarifiers, Uncovered lagoons, Carrousels / oxidation ditches	1
West Lafayette WWTP	W Lafayette	0.17	OH0022284	Oct 2028	Aerated lagoons	2
North Lewisburg WWTP	N Lewisburg	0.09	OH0023582	Oct 2028	Uncovered lagoons	52
Somerset WWTP	Somerset	0.09	OH0023566	Oct 2028	Clarifiers, Uncovered lagoons, Carrousels / oxidation ditches	51
Beallsville WWTP	Beallsville	0.02	OH0020885	Oct 2028	—	26
Reed Road WWTP	Belle Center	0.0025	OH0078981	Oct 2028	—	9
Eldridge Station Hills WWTP	Kenton	0.0019	OH0078999	Oct 2028	—	20
Odot Rome Maintenance Outpost	Rome	0.000063	OH0129984	Oct 2028	—	2
Dunkirk WWTP	Dunkirk	—	OH0048321	Oct 2028	Aerated lagoons	1
Wayne WWTP	Wayne	—	OH0058190	Oct 2028	Uncovered lagoons	4
City Of Warren Water Pollution Control	Warren	10.13	OH0027987	Nov 2028	Clarifiers, Uncovered lagoons	68
Lancaster Water Pollution Control	Lancaster	4.7	OH0026026	Nov 2028	Clarifiers, Uncovered lagoons, Biogas silos	19
Oregon Wastewater Treatment Plant	Oregon	3.58	OH0052914	Nov 2028	Clarifiers	1
Struthers WWTP	Struthers	2.8	OH0027600	Nov 2028	Clarifiers, Biogas silos, Biogas balloons	5
Ravenna WWTP & Sewer System	Ravenna	1.04	OH0023221	Nov 2028	Clarifiers, Aerated lagoons, Biogas silos	3
Erie County Sawmill Creek WWTP	Huron	0.54	OH0053082	Nov 2028	Clarifiers	26
Ripley Sewage Treatment Plant	Ripley	0.2	OH0020966	Nov 2028	Clarifiers, Carrousels / oxidation ditches	140
West Salem WWTP	West Salem	0.17	OH0021377	Nov 2028	Clarifiers	18
Apple Creek WWTP	Apple Creek	0.11	OH0023892	Nov 2028	—	0
Waynesfield WWTP	Waynesfield	0.08	OH0028029	Nov 2028	Aerated lagoons, Uncovered lagoons	30
Laurelville WWTP	Laurelville	0.07	OH0050784	Nov 2028	Covered lagoons, Uncovered lagoons	7
Odot Rest Area 7-33	St. Marys	0.0018	OH0078662	Nov 2028	—	7
Perrysburg WWTP	Perrysburg	2.99	OH0021008	Dec 2028	Clarifiers, Biogas silos	9
Pickerington WWTP	Pickerington	2.54	OH0031119	Dec 2028	Clarifiers	2
Oxford WWTP	Oxford	2.04	OH0026930	Dec 2028	Clarifiers, Uncovered lagoons, Carrousels / oxidation ditches, Biogas silos	5
Heath WWTP	Heath	0.71	OH0025763	Dec 2028	Clarifiers	15
Brookville WWTP	Brookville	0.6	OH0020605	Dec 2028	Clarifiers	21
Buckeye Lake WWTP	Buckeye Lake	0.52	OH0039098	Dec 2028	Clarifiers, Carrousels / oxidation ditches	4
Oak Harbor WWTP	Oak Harbor	0.42	OH0026841	Dec 2028	Clarifiers, Biogas silos, Biogas balloons	121
Glendale WWTP	Glendale	0.29	OH0020141	Dec 2028	Clarifiers, Biogas balloons	5
Seville WWTP	Seville	0.25	OH0027375	Dec 2028	Clarifiers, Uncovered lagoons	16
Piketon WWTP	Piketon	0.2	OH0027031	Dec 2028	Clarifiers, Biogas silos	79
Little Walnut Sycamore WRF	Canal Winchester	0.16	OH0121088	Dec 2028	Clarifiers	7
Saint Paris WWTP	St. Paris	0.12	OH0021806	Dec 2028	Uncovered lagoons	2
Auburn Corners WWTP	Auburn Twp	0.06	OH0123684	Dec 2028	Uncovered lagoons	28
Ansonia WWTP	Ansonia	0.05	OH0023884	Dec 2028	—	6
Bolingbrook WWTP	Ravenna	0.04	OH0038768	Dec 2028	—	5
Gratis WWTP	Gratis	0.03	OH0047571	Dec 2028	—	0
Marengo Village	Marengo	0.01	OH0053881	Dec 2028	Uncovered lagoons	32
Country Side Mobile Home-Country Side Mhp	Amlin	0.0094	OH0121355	Dec 2028	—	65
Trumbull Co Warren #3 WWTP	Leavittsburg	0.0046	OH0091651	Dec 2028	—	0
Mayfield Park Mhp	Akron	0.0028	OH0131547	Dec 2028	—	1
Brentwood Mhp	Holland	0.0014	OH0130061	Dec 2028	—	0
Fayetteville Perry Twp WWTP	Fayetteville	—	OH0119041	Dec 2028	Clarifiers, Aerated lagoons	0

Ohio 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.

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