How many wastewater permits expire in Arkansas in 2028?

33 NPDES permits held by publicly owned wastewater treatment plants in Arkansas expire in 2028, covering a combined average flow of 14 MGD. The busiest month is Jul 2028 with 6 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 Arkansas in 2028?

Nlrwu-White Oak Bayou in North Little Rock, treating about 2.92 MGD under permit AR0038288, expiring Jul 2028.

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.

Try for free Log in

Arkansas wastewater permits expiring in 2028

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

33 NPDES permits · 14 MGD combined average flow

33 publicly owned wastewater treatment plants in Arkansas hold NPDES permits that expire during 2028, issued by Arkansas Division 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 (60)2027 (45)All Arkansas NPDES permits →

Publicly owned wastewater treatment plants in Arkansas with NPDES permits expiring in 2028, from EPA ICIS-NPDES records. Refreshed on every release.
Facility	City	Avg flow (MGD)	NPDES permit	Expires	Violations (3y)
Huttig WWTP	Huttig	0.03	AR0022268	Jan 2028	78
Atkins, City Of - South Wastewater Treatment Plant	Atkins	0.12	AR0034673	Feb 2028	14
Birdsong, City Of WWTP	Birdsong	0.06	AR0045934	Feb 2028	2
Cwl-West Side Wastewater Treatment Plant	Jonesboro	1.84	AR0037907	Mar 2028	3
Tri County Regional Water Distribution District - Plainview WWTP	Plainview	0.05	AR0049344	Mar 2028	13
Waldo, City Of	Waldo	0.03	AR0043508	Apr 2028	11
Foreman, City Of - Foreman Municipal WWTF	Foreman	0.08	AR0023817	May 2028	193
Calion WWTP	Calion	0.03	AR0038211	May 2028	0
Vanndale - Birdeye Water Association, Inc.	Vanndale	—	AR0049409	May 2028	0
Greenwood, City Of	Greenwood	0.99	AR0022454	Jun 2028	11
Nlrwu-White Oak Bayou	North Little Rock	2.92	AR0038288	Jul 2028	0
Bearden WWTP	Bearden	0.09	AR0021474	Jul 2028	20
Hardy WWTP	Hardy	0.07	AR0037991	Jul 2028	57
Tantara #1 D/b/a Boggy Bayou Sid	Pine Bluff	0.05	AR0037885	Jul 2028	0
Alicia, City Of	Alicia	0.04	AR0039675	Jul 2028	87
Banks, City Of	Banks	0.0028	AR0050601	Jul 2028	81
Horseshoe Lake Wwt Facility	Horseshoe Lake	—	AR0049531	Aug 2028	0
Osceola WWTP	Osceola	2.49	AR0021580	Sep 2028	14
Harrell WWTP	Harrell	0.06	AR0042609	Sep 2028	39
Cash WWTP	Cash	0.0014	AR0045284	Sep 2028	16
Mammoth Spring WWTP	Mammoth Spring	0.04	AR0023850	Oct 2028	68
Menifee WWTP	Menifee	0.03	AR0049361	Oct 2028	0
Etowah WWTP	Etowah	0.02	AR0050741	Oct 2028	15
Wabbaseka, City Of	Wabbaseka	—	AR0039896	Oct 2028	164
Donaldson, Town Of	Donaldson	0.14	AR0048020	Nov 2028	37
Fountain Hill, City	Fountain Hill	0.09	AR0042421	Nov 2028	269
London Pollution Control Fac.	London	0.05	AR0050946	Nov 2028	73
Success WWTP	Success	0.0089	AR0048071	Nov 2028	2
Marion, City Of	Marion	1.61	AR0021971	Dec 2028	93
Camden, Arkansas Water Treatment Plant	Camden	1.47	AR0022365	Dec 2028	0
El Dorado, City Of- South Plant	Eldorado	1.28	AR0033723	Dec 2028	27
Mulberry, City Of	Mulberry	0.28	AR0034932	Dec 2028	100
Gravel Ridge Sid #213	Gravel Ridge	0.21	AR0033642	Dec 2028	54

Arkansas 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 October 26, 2026.

Wastewater terms: NPDES permit · POTW · Biological nutrient removal · Tertiary treatment · Ozonation · Activated sludge · 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 2028: Arkansas wastewater plants.” Updated October 26, 2026. https://klarifi.io/facilities/arkansas/permits-expiring/2028

Need a custom cut of the data for a state, a county or a list of plants? Email info@klarifi.io.

Try Klarifi for free

Create your own trial account and explore how Klarifi can help you.

Try for free