How many wastewater permits expire in North Carolina in 2027?

9 NPDES permits held by publicly owned wastewater treatment plants in North Carolina expire in 2027, covering a combined average flow of 12 MGD. The busiest month is Jan 2027 with 3 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 North Carolina in 2027?

New Bern Waste Water Treatment Plant in New Bern, treating about 5.17 MGD under permit NC0025348, expiring Jun 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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North Carolina wastewater permits expiring in 2027

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

9 NPDES permits · 12 MGD combined average flow

9 publicly owned wastewater treatment plants in North Carolina hold NPDES permits that expire during 2027, issued by North Carolina Department of Environmental Quality. 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 (12)2028 (14)All North Carolina NPDES permits →

Publicly owned wastewater treatment plants in North Carolina 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)
Eagle Road WWTP	Cramerton	0.52	NC0006033	Jan 2027	0
Beulaville WWTP	Beulaville	—	NC0026018	Jan 2027	2
Kenansville WWTP	Kenansville	—	NC0036668	Jan 2027	0
Triangle WWTP	Durham	4.53	NC0026051	Apr 2027	3
Siler City WWTP	Siler City	2.26	NC0026441	May 2027	20
New Bern Waste Water Treatment Plant	New Bern	5.17	NC0025348	Jun 2027	0
Twsa Plant #3	Cashiers	—	NC0063321	Aug 2027	5
Moore County WPCF	Aberdeen	—	NC0037508	Oct 2027	3
Hertford WWTP	Hertford	—	NC0021849	Dec 2027	18

North Carolina 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 · Centrate · Ozonation · 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: North Carolina plants.” Updated October 26, 2026. https://klarifi.io/facilities/north-carolina/permits-expiring/2027

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