Lagoon systems: wastewater treatment plants in Alabama
150 plants · 59% of the state · 66 MGD reported by 105 plants
Klarifi identifies 150 publicly owned wastewater treatment plants with lagoon systems in Alabama, 59% of the 253 plants in the state (66 MGD reported by 105 plants). The largest is City Of Huntsville in Madison at 10.29 MGD.
Lagoon systems treat wastewater in large earthen ponds over weeks of retention time, with or without mechanical aeration. They serve thousands of small towns because they are cheap to run, but they struggle with ammonia and nutrient limits, fill with sludge over decades and are the plants most often converted or upgraded when a permit is renewed.
The largest lagoons in Alabama
| # | Facility | City | Avg flow (MGD) | NPDES permit | Expires | Violations (3y) |
|---|---|---|---|---|---|---|
| 1 | City Of Huntsville | Madison | 10.29 | AL0049531 | Jun 2030 | 2 |
| 2 | Albertville Waste Water Treatment Plant | Albertville | 6.44 | AL0020192 | Apr 2027 | 24 |
| 3 | Five Mile Creek Wastewater Treatment Plant | Fultondale | 6.1 | AL0026913 | Jun 2026 | 1 |
| 4 | Cypress Creek WWTP | Florence | 5.14 | AL0023884 | Dec 2026 | 4 |
| 5 | Phenix City Wastewater Treatment Plant | Phenix City | 3.25 | AL0022209 | Jul 2026 | 254 |
| 6 | Turkey Creek WWTP | Pinson | 2.7 | AL0022926 | Jun 2026 | 1 |
| 7 | Jasper Town Creek WWTP | Jasper | 2.6 | AL0023418 | Sep 2029 | 2 |
| 8 | Foley WWTP | Foley | 2.07 | AL0049042 | Oct 2027 | 1 |
| 9 | City Of Union Springs Utilities Board | Union Springs | 2 | AL0060445 | Apr 2026 | 101 |
| 10 | Russellville WWTP | Russellville | 1.84 | AL0027987 | Jul 2027 | 5 |
| 11 | Lanett WWTP City Of | Lanett | 1.57 | AL0023159 | Nov 2025 | 24 |
| 12 | J. E. Ham WWTP | Sylacauga | 1.57 | AL0020001 | Jun 2030 | 0 |
| 13 | Robertsdale WWTP | Robertsdale | 1.1 | AL0042838 | Apr 2029 | 1 |
| 14 | Saraland Wastewater Treatment Plant | Saraland | 1.1 | AL0055786 | Mar 2022 | 17 |
| 15 | Satsuma Wastewater Treatment Facility | Satsuma | 0.85 | AL0063002 | Sep 2029 | 47 |
| 16 | City Of Hoover | Hoover | 0.82 | AL0041653 | Sep 2028 | 0 |
| 17 | Piedmont Lagoon | Piedmont | 0.8 | AL0024376 | Apr 2029 | 37 |
| 18 | Ashland City Of Water Works And Sewer Bd (wwtp) | Ashland | 0.78 | AL0020141 | Nov 2027 | 4 |
| 19 | Leeds Norman R Skinner WWTP | Leeds | 0.78 | AL0067067 | Dec 2027 | 3 |
| 20 | Bridgeport Utilities Board | Bridgeport | 0.66 | AL0020991 | Dec 2028 | 9 |
| 21 | Rainbow City Lagoon | Rainbow City | 0.64 | AL0056839 | Oct 2026 | 0 |
| 22 | Mallard Fox West WWTP | Trinity | 0.64 | AL0076708 | Jul 2029 | 10 |
| 23 | Brundidge WWTP | Brundidge | 0.49 | AL0044105 | Dec 2027 | 329 |
| 24 | Columbiana WWTP | Columbiana | 0.46 | AL0024589 | Oct 2026 | 62 |
| 25 | Centreville-Brent WWTP | Centreville | 0.45 | AL0044857 | Apr 2031 | 49 |
Contacts and project signals for every plant on this list
Klarifi adds verified decision-maker contacts, permit limits, discharge monitoring data and the capital projects planned in each city, filterable by technology, size and compliance record.
Other technologies in Alabama
Lagoon systems in other states
Lagoon systems in Alabama: 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.