Arkansas wastewater permits expiring in 2027
45 NPDES permits · 10 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 | Violations (3y) |
|---|---|---|---|---|---|
| Kensett, City Of-WWTP | Kensett | 0.12 | AR0022322 | Jan 2027 | 48 |
| Diamondhead Resort-Wwt | Diamondhead | 0.03 | AR0048615 | Jan 2027 | 16 |
| City Of Lepanto | Lepanto | 0.01 | AR0023841 | Feb 2027 | 1 |
| Mitchellville, City Of | Mitchellville | 0.00093 | AR0037125 | Feb 2027 | 4 |
| Green Forest, City Of - Green Forest WWTP | Green Forest | 2.53 | AR0021741 | Mar 2027 | 0 |
| Holiday Island Sid-WWTP | Holiday Island | 0.26 | AR0037249 | Mar 2027 | 19 |
| Pangburn, City Of | Pangburn | 0.16 | AR0039233 | Mar 2027 | 4 |
| Wilton WW Treatment Facility | Wilton | 0.04 | AR0040886 | Mar 2027 | 202 |
| Hatfield WWTP | Hatfield | 0.04 | AR0035483 | Mar 2027 | 30 |
| Hackett, City Of - Hackett WWTF | Hackett | 0.02 | AR0039781 | Mar 2027 | 0 |
| Edmondson, City Of | Edmondson | 0.0065 | AR0044661 | Mar 2027 | 226 |
| Augusta WWTP | Augusta | 0.17 | AR0034738 | Apr 2027 | 214 |
| Junction City, City Of | Junction City | 0.1 | AR0022179 | Apr 2027 | 45 |
| Higginson, Town Of | Higginson | 0.08 | AR0044822 | Apr 2027 | 102 |
| Newport, City Of - Airport/industrial Park | Newport | — | AR0045225 | Apr 2027 | 0 |
| Marianna, City Of - Marianna Water & Sewer Commission - Pond A | Marianna | — | AR0034169 | May 2027 | 8 |
| Marianna - North WWTP | Marianna | — | AR0034142 | May 2027 | 3 |
| Turrell, City Of | Turrell | — | AR0021954 | May 2027 | 0 |
| Pottsville, City Of | Pottsville | 0.21 | AR0048011 | Jun 2027 | 183 |
| Faulkner County Public Facility Board - D/b/a Preston Community WW Utility | Conway | 0.03 | AR0050571 | Jun 2027 | 155 |
| Emerson, City Of - Emerson Wwt | Emerson | 0.0063 | AR0039594 | Jun 2027 | 6 |
| Watson, City Of - Watson WWTP | Watson | — | AR0021610 | Jun 2027 | 16 |
| Shannon Hills WWTP | Shannon Hills | 0.34 | AR0050636 | Aug 2027 | 39 |
| Lavaca, City Of- Lavaca Municipal Wastewater Treatment Plant | Lavaca | 0.24 | AR0034070 | Aug 2027 | 6 |
| Luxora WWTP | Luxora | 0.09 | AR0033782 | Aug 2027 | 11 |
| Coal Hill, City Of-WWTP | Coal Hill | 0.02 | AR0047686 | Aug 2027 | 168 |
| Humphrey, City Of - WWTP | Humphrey | 0.02 | AR0022284 | Aug 2027 | 260 |
| Heinke Road Property Owners Sewer Improvement District No. 34 | Mabelvale | 0.0032 | AR0044393 | Aug 2027 | 3 |
| Newport, City Of | Newport | 0.97 | AR0037044 | Sep 2027 | 9 |
| Bull Shoals WWTP | Bull Shoals | 0.16 | AR0037028 | Sep 2027 | 1 |
| Caddo Valley WWTP | Caddo Valley | 0.15 | AR0045411 | Sep 2027 | 25 |
| Ash Flat WWTP | Ash Flat | 0.08 | AR0041742 | Sep 2027 | 239 |
| Delight, City Of | Delight | 0.07 | AR0041432 | Sep 2027 | 8 |
| Knobel WWTP | Knobel | 0.01 | AR0043290 | Sep 2027 | 12 |
| Hamburg, City Of | Hamburg | 1.31 | AR0034029 | Oct 2027 | 63 |
| Flippin WWTP | Flippin | 0.19 | AR0021717 | Oct 2027 | 49 |
| Gillham Regional Wastewater District | Gillham | 0.13 | AR0047996 | Oct 2027 | 22 |
| Oak Grove Heights, City Of - Oak Grove Heights Wastewater Treatment Facility | Paragould | 0.05 | AR0045837 | Oct 2027 | 4 |
| Cove, City Of | Cove | 0.03 | AR0049247 | Oct 2027 | 8 |
| Diaz WWTP | Diaz | — | AR0041033 | Oct 2027 | 5 |
| Mena Wastewater Treatment Facility | Mena | 1.67 | AR0036692 | Nov 2027 | 16 |
| Rector, City Of - Rector Wastewater Treatment Facility | Rector | 0.26 | AR0021911 | Nov 2027 | 124 |
| Lake View, City Of | Lakeview | — | AR0041327 | Nov 2027 | 0 |
| Cotter-Gassville WWTP | Cotter | 0.22 | AR0033545 | Dec 2027 | 11 |
| Blevins WWTP | Blevins | 0.05 | AR0041688 | Dec 2027 | 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 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: Arkansas wastewater plants.” Updated October 26, 2026. https://klarifi.io/facilities/arkansas/permits-expiring/2027Need a custom cut of the data for a state, a county or a list of plants? Email info@klarifi.io.