How many wastewater permits expire in Kansas in 2028?

80 NPDES permits held by publicly owned wastewater treatment plants in Kansas expire in 2028, covering a combined average flow of 25 MGD. The busiest month is Sep 2028 with 26 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 Kansas in 2028?

Emporia Wastewater Treatment Plant in Emporia, treating about 4.23 MGD under permit KS0046728, expiring Apr 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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Kansas wastewater permits expiring in 2028

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

80 NPDES permits · 25 MGD combined average flow

80 publicly owned wastewater treatment plants in Kansas hold NPDES permits that expire during 2028, issued by Kansas Department of Health and Environment. 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 (42)2027 (56)All Kansas NPDES permits →

Publicly owned wastewater treatment plants in Kansas 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)
Chanute, City Of	Chanute	1.47	KS0080837	Jan 2028	Clarifiers, Uncovered lagoons, Biogas silos	1
Leavenworth, City Of	Leavenworth	3.18	KS0036366	Feb 2028	Clarifiers, Biogas balloons	11
Arkansas City Mwwtp	Arkansas City	1.61	KS0044831	Feb 2028	Clarifiers, Biogas silos	12
Iola, City Of	Iola	0.29	KS0099414	Feb 2028	Aerated lagoons, Uncovered lagoons	4
South Hutchinson Waste Water Treatment Plant	South Hutchinson	0.77	KS0095711	Mar 2028	Clarifiers	188
Cherokee Co. S.D. #1	Riverton	—	KS0091057	Mar 2028	Uncovered lagoons	1
Coffey Co. S.D. #1 (jacobs Creek)	Burlington	—	KS0090743	Mar 2028	Uncovered lagoons	0
Columbus Sewer Treatment Plant C/o City Hall	Columbus	—	KS0031445	Mar 2028	Uncovered lagoons	2
Cottonwood Falls WWTP	Cottonwood Falls	—	KS0089664	Mar 2028	Uncovered lagoons	1
Elwood Sewer Treatment Plant C/o City Hall	Wathena	—	KS0048526	Mar 2028	Uncovered lagoons	24
Geneseo, City Of	Geneseo	—	KS0098175	Mar 2028	Uncovered lagoons	52
Gridley City Of Sewer Treatment Plant	Gridley	—	KS0045993	Mar 2028	Uncovered lagoons	0
Hartford, City Of	Hartford	—	KS0025682	Mar 2028	Uncovered lagoons	0
Lebo Sewer Treatment Plant C/o City Hall	Lebo	—	KS0024767	Mar 2028	Uncovered lagoons	9
Leroy City Of Sewer Treatment Plant	Leroy	—	KS0030813	Mar 2028	Uncovered lagoons	4
Mccune Sewer Treatment Plant	Mccune	—	KS0021393	Mar 2028	Uncovered lagoons	36
Moundridge Sewer Treatment Plant C/o City Hall	Moundridge	—	KS0021008	Mar 2028	Uncovered lagoons	7
New Strawn Wastewater Plant Ronald Parkey	New Strawn	—	KS0117030	Mar 2028	Uncovered lagoons	0
Peabody Wastewater Plant Ronnie Harms	Peabody	—	KS0097225	Mar 2028	Uncovered lagoons	3
Troy, City Of	Troy	—	KS0083194	Mar 2028	Uncovered lagoons	23
Wathena City Of Sewer Treatment Plant	Wathena	—	KS0026158	Mar 2028	Uncovered lagoons	5
West Mineral City Of Waste Water Treatment Plant	West Mineral	—	KS0080861	Mar 2028	Uncovered lagoons	2
Willowbrook, City Of	Hutchinson	—	KS0093050	Mar 2028	Uncovered lagoons	12
Emporia Wastewater Treatment Plant	Emporia	4.23	KS0046728	Apr 2028	Clarifiers, Biogas silos	27
Goddard Wastewater Plant	Goddard	0.5	KS0098485	Apr 2028	Uncovered lagoons, Cooling towers	4
Baxter Springs WWTP	Baxter Springs	0.62	KS0045934	May 2028	Aerated lagoons, Uncovered lagoons	9
Humboldt, City Of	Humboldt	0.2	KS0022632	May 2028	—	2
Kansas City (plant No. 3) WWTP	Kansas City	0.0075	KS0085600	May 2028	—	2
Council Grove Sewer Treatment Plant C/o City Hall	Council Grove	—	KS0027898	May 2028	Clarifiers, Uncovered lagoons	0
Pittsburg City Of Mun WWTP	Pittsburg	2.7	KS0200022	Jun 2028	Clarifiers, Biogas silos	68
Olathe Harold (main Plant)	Olathe	1.3	KS0045802	Jun 2028	Clarifiers, Biogas silos	5
Americus Waste Water Treatment Facility	Americus	—	KS0047406	Jun 2028	Uncovered lagoons	1
Canton, City Of	Canton	—	KS0087426	Jun 2028	Uncovered lagoons	15
Conway Springs, City Of	Conway Springs	—	KS0030651	Jun 2028	Aerated lagoons, Uncovered lagoons	3
Morrill City Of WWTF	Morrill	—	KS0022691	Jun 2028	Uncovered lagoons	0
Norwich Wastewater Plant	Norwich	—	KS0095494	Jun 2028	Uncovered lagoons	42
Strong City Sanitary Sewer Imprv	Strong City	—	KS0031178	Jun 2028	Uncovered lagoons	0
Viola, City Of	Viola	—	KS0027880	Jun 2028	Uncovered lagoons	36
Weir, City Of	Weir	—	KS0079146	Jun 2028	Uncovered lagoons	6
Willis Wastewater Plant	Holton	—	KS0092037	Jun 2028	Uncovered lagoons	0
Yates Center, City Of	Yates Center	0.2	KS0097446	Aug 2028	—	32
Wellington, City Of	Wellington	0.89	KS0099571	Sep 2028	Clarifiers, Uncovered lagoons, Carrousels / oxidation ditches	32
Parsons WWTP	Parsons	0.62	KS0097560	Sep 2028	Uncovered lagoons, Biogas balloons	4
Allen Co. S.D. #1	Iola	—	KS0085201	Sep 2028	Uncovered lagoons	0
Alta Vista, City Of	Alta Vista	—	KS0096733	Sep 2028	Uncovered lagoons	0
Altamont, City Of	Altamont	—	KS0045918	Sep 2028	Uncovered lagoons	2
Arma Waste Water Treatment Plant C/o City Hall	Arma	—	KS0045926	Sep 2028	Biogas silos	0
Bartlett, City Of	Bartlett	—	KS0080900	Sep 2028	Uncovered lagoons	4
Bern, City Of	Bern	—	KS0047244	Sep 2028	Aerated lagoons, Uncovered lagoons	17
Chetopa Waste Water Treatment Plant C/o City Hall	Chetopa	—	KS0031135	Sep 2028	Uncovered lagoons	0
Colony Waste Water Treatment Facility C/o City Hall	Colony	—	KS0116122	Sep 2028	Uncovered lagoons	3
Dwight Waste Water Treatment Plant	Dwight	—	KS0051675	Sep 2028	Uncovered lagoons	0
Erie Waste Water Treatment Plant	Erie	—	KS0045977	Sep 2028	Uncovered lagoons	0
Florence Wastewater Plant	Florence	—	KS0093068	Sep 2028	Uncovered lagoons	0
Galesburg Wastewater Plant	Galesburg	—	KS0092193	Sep 2028	Uncovered lagoons	0
Highland City Of Sewer Treatment Plant	Highland	—	KS0047457	Sep 2028	Uncovered lagoons	6
La Harpe, City Of	Laharpe	—	KS0094251	Sep 2028	Uncovered lagoons	4
Lehigh, City Of	Hillsboro	—	KS0026417	Sep 2028	Aerated lagoons, Uncovered lagoons	6
Lincolnville, City Of	Lincolnville	—	KS0090581	Sep 2028	Uncovered lagoons	3
Marion Wastewater Plant	Marion	—	KS0051691	Sep 2028	Aerated lagoons, Uncovered lagoons	5
Neosho Rapids Waste Water Treatment Plant	Neosho Rapids	—	KS0117021	Sep 2028	Uncovered lagoons	10
Oneida, City Of	Oneida	—	KS0093467	Sep 2028	Uncovered lagoons	0
Oswego, City Of	Oswego	—	KS0047554	Sep 2028	Uncovered lagoons	1
Saint Paul Waste Water Treatment Facility	Saint Paul	—	KS0084174	Sep 2028	Uncovered lagoons	26
Stark Wastewater Plant Plant Manager	Stark	—	KS0097373	Sep 2028	Uncovered lagoons	0
Walnut City Of Waste Water Treatment Plant	Walnut	—	KS0083887	Sep 2028	Aerated lagoons, Uncovered lagoons	0
White City, City Of	White City	—	KS0096873	Sep 2028	Uncovered lagoons	1
Fort Scott, City Of (new Plant)	Fort Scott	1.03	KS0095923	Oct 2028	Clarifiers, Aerated lagoons, Carrousels / oxidation ditches	35
Hiawatha , City Of - WWTF #3	Hiawatha	0.48	KS0096440	Oct 2028	—	27
Girard, City Of	Girard	—	KS0022551	Oct 2028	Aerated lagoons, Uncovered lagoons	9
Hutchinson, City Of	Hutchinson	3.74	KS0036188	Dec 2028	Clarifiers, Uncovered lagoons, Carrousels / oxidation ditches, Biogas silos	16
Atchison, City Of	Atchison	0.72	KS0039128	Dec 2028	—	7
City Of Hillsboro	Hillsboro	—	KS0097896	Dec 2028	Uncovered lagoons	7
Fairview, City Of	Fairview	—	KS0098744	Dec 2028	Uncovered lagoons	0
Galena Sewer Treatment Plant C/o City Hall	Galena	—	KS0048135	Dec 2028	Uncovered lagoons	11
Kdot Linn Co US 69 WWTF	Trading Post	—	KS0097861	Dec 2028	Aerated lagoons	0
Seneca, City Of	Seneca	—	KS0047538	Dec 2028	Uncovered lagoons	7
Solomon Waste Water Treatment Facility C/o City Hall	Solomon	—	KS0085979	Dec 2028	Uncovered lagoons	9
Wilson Co. Sd #1 (tulakes)	Chanute	—	KS0084476	Dec 2028	Uncovered lagoons	20
Woodson Co Improvement Dis. #2	Iola	—	KS0084085	Dec 2028	Uncovered lagoons	3

Kansas 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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