Arkansas wastewater permits expiring in 2027
45 NPDES permits · 8 MGD combined average flow
45 publicly owned wastewater treatment plants in Arkansas hold NPDES permits that expire during 2027, 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.
| Facility | City | Avg flow (MGD) | NPDES permit | Expires | Technology | Violations (3y) |
|---|---|---|---|---|---|---|
| Kensett, City Of-WWTP | Kensett | 0.1 | AR0022322 | Jan 2027 | Uncovered lagoons | 46 |
| Diamondhead Resort-Wwt | Diamondhead | 0.02 | AR0048615 | Jan 2027 | — | 16 |
| Mitchellville, City Of | Mitchellville | 0.00014 | AR0037125 | Feb 2027 | — | 3 |
| City Of Lepanto | Lepanto | — | AR0023841 | Feb 2027 | Uncovered lagoons | 1 |
| Green Forest, City Of - Green Forest WWTP | Green Forest | 2.51 | AR0021741 | Mar 2027 | Clarifiers, Aerated lagoons, Carrousels / oxidation ditches, Biogas silos | 0 |
| Holiday Island Sid-WWTP | Holiday Island | 0.25 | AR0037249 | Mar 2027 | Clarifiers, Carrousels / oxidation ditches | 18 |
| Hatfield WWTP | Hatfield | 0.05 | AR0035483 | Mar 2027 | Uncovered lagoons | 27 |
| Edmondson, City Of | Edmondson | — | AR0044661 | Mar 2027 | Uncovered lagoons | 100 |
| Hackett, City Of - Hackett WWTF | Hackett | — | AR0039781 | Mar 2027 | Aerated lagoons, Uncovered lagoons | 0 |
| Pangburn, City Of | Pangburn | — | AR0039233 | Mar 2027 | Uncovered lagoons | 4 |
| Wilton WW Treatment Facility | Wilton | — | AR0040886 | Mar 2027 | Aerated lagoons, Uncovered lagoons | 203 |
| Augusta WWTP | Augusta | 0.19 | AR0034738 | Apr 2027 | Clarifiers, Carrousels / oxidation ditches | 209 |
| Higginson, Town Of | Higginson | 0.0048 | AR0044822 | Apr 2027 | Aerated lagoons, Uncovered lagoons | 103 |
| Junction City, City Of | Junction City | — | AR0022179 | Apr 2027 | Uncovered lagoons | 45 |
| Newport, City Of - Airport/industrial Park | Newport | — | AR0045225 | Apr 2027 | Clarifiers, Aerated lagoons, Uncovered lagoons | 0 |
| Marianna, City Of - Marianna Water & Sewer Commission - Pond A | Marianna | — | AR0034169 | May 2027 | Uncovered lagoons | 8 |
| Marianna - North WWTP | Marianna | — | AR0034142 | May 2027 | Uncovered lagoons | 3 |
| Turrell, City Of | Turrell | — | AR0021954 | May 2027 | Uncovered lagoons | 0 |
| Pottsville, City Of | Pottsville | 0.13 | AR0048011 | Jun 2027 | Uncovered lagoons | 116 |
| Faulkner County Public Facility Board - D/b/a Preston Community WW Utility | Conway | 0.04 | AR0050571 | Jun 2027 | — | 157 |
| Emerson, City Of - Emerson Wwt | Emerson | 0.008 | AR0039594 | Jun 2027 | Uncovered lagoons | 6 |
| Watson, City Of - Watson WWTP | Watson | — | AR0021610 | Jun 2027 | Uncovered lagoons | 16 |
| Shannon Hills WWTP | Shannon Hills | 0.27 | AR0050636 | Aug 2027 | Aerated lagoons, Uncovered lagoons | 39 |
| Lavaca, City Of- Lavaca Municipal Wastewater Treatment Plant | Lavaca | 0.26 | AR0034070 | Aug 2027 | Aerated lagoons, Uncovered lagoons | 5 |
| Coal Hill, City Of-WWTP | Coal Hill | 0.1 | AR0047686 | Aug 2027 | Aerated lagoons, Uncovered lagoons | 166 |
| Heinke Road Property Owners Sewer Improvement District No. 34 | Mabelvale | 0.004 | AR0044393 | Aug 2027 | — | 3 |
| Humphrey, City Of - WWTP | Humphrey | 0.0003 | AR0022284 | Aug 2027 | Uncovered lagoons | 267 |
| Luxora WWTP | Luxora | — | AR0033782 | Aug 2027 | Uncovered lagoons | 11 |
| Newport, City Of | Newport | 1.31 | AR0037044 | Sep 2027 | Aerated lagoons | 9 |
| Bull Shoals WWTP | Bull Shoals | 0.18 | AR0037028 | Sep 2027 | — | 1 |
| Ash Flat WWTP | Ash Flat | 0.07 | AR0041742 | Sep 2027 | Clarifiers, Uncovered lagoons, Carrousels / oxidation ditches | 216 |
| Caddo Valley WWTP | Caddo Valley | — | AR0045411 | Sep 2027 | Aerated lagoons, Uncovered lagoons | 25 |
| Delight, City Of | Delight | — | AR0041432 | Sep 2027 | Uncovered lagoons | 8 |
| Knobel WWTP | Knobel | — | AR0043290 | Sep 2027 | Uncovered lagoons | 12 |
| Oak Grove Heights, City Of - Oak Grove Heights Wastewater Treatment Facility | Paragould | 0.6 | AR0045837 | Oct 2027 | Uncovered lagoons | 4 |
| Gillham Regional Wastewater District | Gillham | 0.12 | AR0047996 | Oct 2027 | — | 21 |
| Flippin WWTP | Flippin | 0.08 | AR0021717 | Oct 2027 | Clarifiers, Uncovered lagoons | 49 |
| Cove, City Of | Cove | 0.03 | AR0049247 | Oct 2027 | Uncovered lagoons | 9 |
| Diaz WWTP | Diaz | — | AR0041033 | Oct 2027 | Aerated lagoons, Uncovered lagoons | 5 |
| Hamburg, City Of | Hamburg | — | AR0034029 | Oct 2027 | Uncovered lagoons | 8 |
| Mena Wastewater Treatment Facility | Mena | 1.4 | AR0036692 | Nov 2027 | Aerated lagoons | 16 |
| Rector, City Of - Rector Wastewater Treatment Facility | Rector | 0.19 | AR0021911 | Nov 2027 | — | 123 |
| Lake View, City Of | Lakeview | — | AR0041327 | Nov 2027 | Uncovered lagoons | 0 |
| Cotter-Gassville WWTP | Cotter | 0.2 | AR0033545 | Dec 2027 | Clarifiers | 11 |
| Blevins WWTP | Blevins | — | AR0041688 | Dec 2027 | Uncovered lagoons | 5 |
Arkansas 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.