Tennessee wastewater permits expiring in 2027
43 NPDES permits · 60 MGD combined average flow
43 publicly owned wastewater treatment plants in Tennessee hold NPDES permits that expire during 2027, issued by Tennessee Department of Environment and Conservation. 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) |
|---|---|---|---|---|---|
| Trenton WWTP | Trenton | 0.79 | TN0078271 | Jan 2027 | 0 |
| Niota STP | Niota | 0.11 | TN0025470 | Jan 2027 | 2 |
| Cowan STP | Cowan | 0.07 | TN0021644 | Jan 2027 | 0 |
| Richland School | Lynnville | 0.0012 | TN0054810 | Feb 2027 | 21 |
| First U.D. Knox Co.-Turkey Cr | Knoxville | 8.49 | TN0023353 | Apr 2027 | 23 |
| Cleveland Utilities Wastewater Treatment Plant | Charleston | 8.48 | TN0024121 | Apr 2027 | 44 |
| Bartlett WWTP #2 | Arlington | 0.42 | TN0068543 | Apr 2027 | 4 |
| University Of Tennessee Space Institute | Tullahoma | 0.01 | TN0067202 | Apr 2027 | 1 |
| E.E. Jeter School | Millington | 0.0023 | TN0023833 | Apr 2027 | 6 |
| Pleasant Hill Housing Project | Pleasant Hill | 0.001 | TN0027618 | Apr 2027 | 1 |
| Jackson Energy Auth- Middle Fk | Jackson | 2.58 | TN0075876 | May 2027 | 6 |
| Etowah Utilities Board Dba Etowah Utilities Wastewater Treatment Plant | Etowah | 0.97 | TN0063771 | May 2027 | 17 |
| City Of Cookeville Department Of Water Quality Control (wwtp) | Cookeville | 10.75 | TN0024198 | Jun 2027 | 27 |
| Baxter STP | Baxter | 0.19 | TN0021121 | Jun 2027 | 13 |
| Nashville J.P.Priest Lake Hamilton Creek Recreation Area | Nashville | 0.02 | TN0028550 | Jun 2027 | 2 |
| Appalachian Center For Crafts | Smithville | 0.0036 | TN0055409 | Jun 2027 | 5 |
| Tullahoma STP | Tullahoma | 2.98 | TN0023469 | Jul 2027 | 6 |
| Alamo STP | Alamo | 0.3 | TN0024988 | Jul 2027 | 180 |
| Alexandria STP | Alexandria | 0.26 | TN0021539 | Jul 2027 | 165 |
| Dyer STP | Dyer | 0.25 | TN0021563 | Jul 2027 | 14 |
| Shelby County Government- Chapel Hill S.D. STP | Memphis | 0.03 | TN0026361 | Jul 2027 | 22 |
| Humboldt Utilities Authority | Humboldt | 3.13 | TN0062588 | Aug 2027 | 7 |
| Lynchburg STP | Lynchburg | 0.19 | TN0025101 | Aug 2027 | 2 |
| Englewood STP | Englewood | 0.12 | TN0021938 | Aug 2027 | 5 |
| East Elementary School | Jackson | 0.0086 | TN0056481 | Aug 2027 | 1 |
| Unity School | Petersburg | 0.0025 | TN0065498 | Aug 2027 | 8 |
| Elkton STP | Elkton | 0.00042 | TN0076007 | Aug 2027 | 35 |
| Smithville STP | Smithville | 1.73 | TN0065358 | Sep 2027 | 1 |
| Sparta Electric And Public Works Dba Sparta Wastewater Treatment Plant | Sparta | 0.97 | TN0061166 | Sep 2027 | 24 |
| Loretto STP | Loretto | 0.37 | TN0065501 | Sep 2027 | 16 |
| Monteagle Stp, Plant #3 | Monteagle | 0.23 | TN0080985 | Sep 2027 | 10 |
| City Of Pulaski Wastewater Treatment Plant | Pulaski | 1.93 | TN0021687 | Oct 2027 | 2 |
| Somerville Lagoon | Somerville | 0.48 | TN0021652 | Oct 2027 | 22 |
| Spencer STP | Spencer | 0.08 | TN0077691 | Oct 2027 | 0 |
| Calhoun School | Calhoun | 0.0032 | TN0054828 | Oct 2027 | 5 |
| Fayette County D/b/a Arlington Mobile Park Lagoon | Arlington | — | TN0081027 | Oct 2027 | 5 |
| Mason STP | Mason | — | TN0026620 | Oct 2027 | 17 |
| Arlington STP | Arlington | 1.42 | TN0078603 | Nov 2027 | 94 |
| Cornersville STP | Cornersville | 0.18 | TN0061841 | Nov 2027 | 27 |
| Rogers Creek Elementary School | Riceville | 0.0034 | TN0067555 | Nov 2027 | 10 |
| Tdot I-65 Welcome Center - Giles County | Ardmore | 0.002 | TN0074331 | Nov 2027 | 7 |
| Oakland - Mechanical WWTP | Oakland | 8.18 | TN0077836 | Dec 2027 | 35 |
| Dyersburg STP | Dyersburg | 3.87 | TN0023477 | Dec 2027 | 20 |
Tennessee 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 · Biosolids · Filter press · 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: Tennessee wastewater plants.” Updated October 26, 2026. https://klarifi.io/facilities/tennessee/permits-expiring/2027Need a custom cut of the data for a state, a county or a list of plants? Email info@klarifi.io.