How many wastewater permits expire in Kentucky in 2027?

19 NPDES permits held by publicly owned wastewater treatment plants in Kentucky expire in 2027, covering a combined average flow of 9 MGD. The busiest month is Mar 2027 with 4 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 Kentucky in 2027?

Mount Sterling Hinkston Creek STP in Mt Sterling, treating about 1.62 MGD under permit KY0104400, expiring Dec 2027.

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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Kentucky wastewater permits expiring in 2027

Name: Kentucky NPDES permits expiring in 2027
Creator: Klarifi
License: https://klarifi.io/terms-of-service

19 NPDES permits · 9 MGD combined average flow

19 publicly owned wastewater treatment plants in Kentucky hold NPDES permits that expire during 2027, issued by Kentucky Energy and Environment Cabinet, Division of Water. 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 (20)2028 (33)All Kentucky NPDES permits →

Publicly owned wastewater treatment plants in Kentucky with NPDES permits expiring in 2027, from EPA ICIS-NPDES records. Refreshed on every release.
Facility	City	Avg flow (MGD)	NPDES permit	Expires	Technology	Violations (3y)
Big Valley Mhp	Shepherdsville	0.0031	KY0072168	Jan 2027	—	2
Pineville STP	Pineville	0.44	KY0024058	Feb 2027	Uncovered lagoons	73
Brandenburg WWTP	Brandenburg	0.22	KY0021474	Feb 2027	Clarifiers, Uncovered lagoons, Carrousels / oxidation ditches	3
Carrollton Regional WWTP	Carrollton	1.18	KY0104931	Mar 2027	Clarifiers, Aerated lagoons	0
Tompkinsville STP	Tompkinsville	0.82	KY0020702	Mar 2027	Clarifiers	125
Caveland Environmental Auth	Horse Cave	0.72	KY0091561	Mar 2027	Clarifiers, Carrousels / oxidation ditches, Cooling towers	6
Guthrie STP	Guthrie	0.26	KY0063649	Mar 2027	Clarifiers, Carrousels / oxidation ditches	41
Bcsd Hillview STP	Brooks	0.05	KY0103900	May 2027	Clarifiers	17
New Marion WWTP	Marion	0.32	KY0113247	Jun 2027	Clarifiers, Aerated lagoons, Uncovered lagoons	358
Vanceburg STP	Vanceburg	0.13	KY0021512	Jun 2027	Clarifiers, Carrousels / oxidation ditches, Biogas silos	3
Keene Village Water & Sewer	Raccoon	0.002	KY0072834	Jun 2027	—	0
Paducah/mccracken County Jsa - Woodlawn	Paducah	0.35	KY0025828	Jul 2027	—	27
Elkhorn City STP	Elkhorn City	0.07	KY0020958	Sep 2027	—	7
Barlow STP	Barlow	0.05	KY0025747	Oct 2027	Aerated lagoons, Uncovered lagoons	28
South 641 Water District	Hazel	—	KY0028371	Oct 2027	Uncovered lagoons	64
La Grange STP	La Grange	0.85	KY0020001	Nov 2027	Clarifiers, Uncovered lagoons, Carrousels / oxidation ditches	5
Mount Sterling Hinkston Creek STP	Mt Sterling	1.62	KY0104400	Dec 2027	Clarifiers, Carrousels / oxidation ditches	14
Harrodsburg WWTP Expansion	Harrodsburg	1.39	KY0027421	Dec 2027	Clarifiers, Aerated lagoons, Uncovered lagoons, Carrousels / oxidation ditches	75
Lewis County Sd #1	Tollesboro	0.07	KY0102601	Dec 2027	Covered lagoons	1

Kentucky 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 September 11, 2026.

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