Klarifi Logo
Try for freeLog in
Klarifi Logo

Arkansas wastewater permits expiring in 2026

60 NPDES permits · 23 MGD combined average flow

60 publicly owned wastewater treatment plants in Arkansas hold NPDES permits that expire during 2026, 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:

2027 (45)2028 (33)All Arkansas NPDES permits →
Publicly owned wastewater treatment plants in Arkansas with NPDES permits expiring in 2026, from EPA ICIS-NPDES records. Refreshed on every release.
FacilityCityAvg flow (MGD)NPDES permitExpiresViolations (3y)
Trumann WWTPTrumann0.47AR0035602Jan 20260
Mount Ida WWTPMount Ida0.21AR0033855Jan 202634
Manila WWTPManila0.21AR0021881Jan 2026172
Leachville WWTPLeachville0.11AR0022012Jan 20267
Poyen, City OfPoyen0.08AR0048445Jan 202665
Gillett, City Of-WWTPGillett0.06AR0022390Jan 20264
Portia Wastewater Treatment PlantPortia0.03AR0040355Jan 2026148
Ulm WWTPUlm0.0066AR0038008Jan 202613
Egypt, City OfEgypt—AR0043524Jan 202615
Reyno WWTPReyno—AR0022209Jan 20260
Fort Smith, City Of-Massard Water Reclamation FacilityBarling8.03AR0021750Feb 202640
Des Arc, City OfDes Arc0.21AR0022225Feb 2026248
Huntington Sanitary Sewerage FacilitiesHuntington0.16AR0037419Feb 202640
Lafe WWTPLafe0.02AR0048909Feb 20265
Parkdale Wastewater Treatment PlantParkdale0.0091AR0050997Feb 202610
Marvell WWTPMarvell—AR0035840Feb 2026226
Benton WWTPBenton4.49AR0036498Mar 20264
Murfreesboro WWTPMurfreesboro0.51AR0043281Mar 202660
Yellville, City OfYellville0.25AR0034037Mar 202629
Eudora, City OfEudora0.14AR0033839Mar 202647
Sparkman, City OfSparkman0.08AR0035939Mar 20261
Highland WWTPCherokee Village0.06AR0050261Mar 202699
Madison, City Of-WWTPMadison0.03AR0037893Mar 202637
Calico Rock WWTPCalico Rock0.03AR0034606Mar 202623
Wilmot, City OfWilmot0.0056AR0050989Mar 202673
Biscoe, City OfBiscoe—AR0047589Mar 20260
Waldron, City OfWaldron0.52AR0035769Apr 202634
Earle WaterworksEarle0.48AR0034304Apr 20268
Newark, City OfNewark0.02AR0021229Apr 20267
Paris WWTPParis0.69AR0021857May 202631
Saline County Waterworks And Sanitary Sewer Public Facilities BoardAlexander0.2AR0044881May 202625
Louann, City OfLouann0.02AR0040517May 2026163
Bradley, City Of-WWTPBradley0.01AR0020621May 2026218
City Of Sedgwick - ArkansasSedgwick0.01AR0043443May 202614
Dyess WWTPDyess0.1AR0039047Jun 202614
Altheimer WWTPAltheimer0.06AR0034771Jun 202610
Emmet, City OfEmmet0.07AR0041815Jul 20263
Rockport, City Of - WWTFRockport0.008AR0052663Jul 2026147
145th Street Water And Sewer Improvement District No. 345 Of Pulaski CountyLittle Rock—AR0040266Jul 202690
Grady, City Of-WWTPGrady—AR0039381Jul 202696
Sherwood, City Of-South FacilitySherwood0.39AR0045608Aug 20268
Lochridge Estates WWTPLittle Rock0.01AR0050521Aug 202667
Russell WaterworksRussell0.0006AR0022217Aug 202615
Joiner, City Of-WWTPJoiner0.07AR0022152Sep 202666
Sugarloaf Wastewater TreatmentLead Hill0.03AR0043753Sep 202611
Sulphur Springs WWTPSulphur Springs0.01AR0051179Sep 202629
Ola WWTPOla0.25AR0035688Oct 202613
Tuckerman, City Of - Wastewater Treatment PlantTuckerman0.13AR0020001Oct 2026211
Cherry Valley, City Of - Cherry Valley Sewage Treatment PlantCherry Valley0.02AR0021393Oct 20260
Burdette WWTPBurdette—AR0044237Oct 2026260
Colt WWTPColt—AR0043192Oct 202645
Mcneil, City Of - Wastewater Treatment PlantMcneil—AR0021555Oct 20260
Bald Knob, City Of - Wastewater Treatment FacilityBald Knob0.33AR0035807Nov 202668
Gould, City Of-WWTFGould0.05AR0021679Nov 2026121
Oppelo, City Of - Oppelo Municipal Sewage Treatment PlantOppelo0.0037AR0047643Nov 202631
City Of St. Charles StfSaint Charles—AR0049310Nov 202630
Grubbs, City OfGrubbs—AR0034614Nov 20264
Northwest Arkansas Conservation Authority -Regional WWTPBentonville3.99AR0050024Dec 2026160
Prairie Grove WWTPPrairie Grove—ARG640066Dec 202696
Stone Dam Creek Wastewater Treatment PlantConway—ARG640051Dec 20260

Arkansas permit renewals in 2026: 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 · Equalization tank · Centrate · 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 2026: Arkansas wastewater plants.” Updated October 26, 2026. https://klarifi.io/facilities/arkansas/permits-expiring/2026

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