Who issues NPDES permits in Arkansas?

Arkansas Division of Environmental Quality issues and enforces NPDES permits for wastewater discharges in Arkansas. Klarifi tracks 321 permits held by publicly owned treatment plants in the state.

How many NPDES permits in Arkansas are expired or administratively continued?

126 permits are administratively continued (the plant applied for renewal and the old permit stays in force) and 18 are recorded as expired, out of 321 permits tracked. 177 are effective.

How many Arkansas wastewater permits come up for renewal soon?

60 in 2026, 45 in 2027 and 31 in 2028. Each year has its own renewal calendar with the plants listed.

How do I look up an NPDES permit number?

Enter the permit number (two letters and seven characters, for example TX0021873) or the plant name in the lookup on the NPDES page; each result opens the plant profile with status, expiry, design flow and the three-year violation count.

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NPDES permits in Arkansas

Name: NPDES permits held by wastewater treatment plants in Arkansas
Creator: Klarifi
License: https://klarifi.io/terms-of-service

321 permits held by publicly owned wastewater treatment plants · issued by DEQ

Effective

177

Administratively continued

126

Expired

Total tracked

321

Arkansas Division of Environmental Quality (DEQ) runs the NPDES program in Arkansas under delegation from EPA Region 6, issuing and enforcing the discharge permits listed here. Klarifi tracks 321 permits held by publicly owned treatment plants in the state, with status, expiry, design flow and three-year compliance for each. Agency website →

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.

Permit renewals by year

2026: 60 permits →2027: 45 permits →2028: 31 permits →

2029: 40 permits

2030: 32 permits

2031: 12 permits

Largest permit holders in Arkansas

The 25 largest publicly owned wastewater treatment plants in Arkansas by permitted design flow, with NPDES permit number, status and expiry. Source: EPA ICIS-NPDES via Klarifi.
Facility	City	Avg flow (MGD)	Design (MGD)	NPDES permit	Status	Expires	Violations (3y)
Lrwra-Fourche Creek Water Reclamation Facility	Little Rock	6.57	16	AR0040177	Administratively continued	Jul 2025	0
Fayetteville - Noland WWTP	Fayetteville	6.81	12.6	AR0020010	Effective	Apr 2029	6
Jacksonville Wastewater Utility	Jacksonville	3	12.31	AR0041335	Effective	Jan 2029	0
City Of Hot Springs Regional Wastewater Treatment Plant	Hot Springs	7.79	12	AR0033880	Effective	Jun 2029	84
Fayetteville/ West Side WWTP	Fayetteville	10.72	—	ARL050288	Effective	Dec 2030	0
Fort Smith, City Of-Massard Water Reclamation Facility	Barling	6.78	10	AR0021750	Administratively continued	Feb 2026	37
Fort Smith, City Of - P Street Water Reclamation Facility	Fort Smith	9.89	—	ARL033278	Effective	Dec 2030	2
Nlrwu-White Oak Bayou	North Little Rock	2.45	8.5	AR0038288	Effective	Jul 2028	0
Benton WWTP	Benton	3.84	8.3	AR0036498	Administratively continued	Mar 2026	4
Pine Bluff WW Utility-Boyd Pt	Pine Bluff	7.62	—	ARL033316	Effective	Dec 2030	16
Monticello WWTP East Plant	Monticello	0.09	7.2	AR0021831	Administratively continued	Jan 2025	26
West Memphis Wastewater Treatment Facility	West Memphis	4	6.3	AR0022039	Effective	Oct 2029	19
Searcy Wastewater Treatment Plant	Searcy	3.24	5	AR0021601	Administratively continued	Apr 2024	12
Russellville WWTP	Russellville	4.2	—	ARL021768	Effective	Dec 2030	46
Dequeen, City Of	De Queen	2.29	4	AR0021733	Administratively continued	Mar 2025	57
Green Forest, City Of - Green Forest WWTP	Green Forest	2.51	4	AR0021741	Effective	Mar 2027	0
Lrwra-Little Maumelle Water Reclamation Facility	Little Rock	1.92	4	AR0050849	Administratively continued	Dec 2024	0
Camden, Arkansas Water Treatment Plant	Camden	1.21	3.5	AR0022365	Effective	Dec 2028	0
Northwest Arkansas Conservation Authority -Regional WWTP	Bentonville	3.26	—	AR0050024	Effective	Dec 2026	158
Osceola WWTP	Osceola	2.5	3.25	AR0021580	Effective	Sep 2028	14
Mena Wastewater Treatment Facility	Mena	1.4	3.1	AR0036692	Effective	Nov 2027	16
Cwl-West Side Wastewater Treatment Plant	Jonesboro	1.91	3	AR0037907	Effective	Mar 2028	3
Tucker Creek Wastewater Treatment Plant	Conway	2.96	—	ARL047279	Effective	Dec 2030	11
Wynne Water Utilities	Wynne	—	2.76	AR0021903	Effective	Jan 2029	0
Berryville, City Of-WWTP	Berryville	1.32	2.4	AR0021792	Administratively continued	Oct 2021	2

All 321 plants in Arkansas →

NPDES permits in Arkansas: 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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