Oxidation ditches: wastewater treatment plants in Missouri
57 plants · 10% of the state · 146 MGD reported by 56 plants
Klarifi identifies 57 publicly owned wastewater treatment plants with oxidation ditches in Missouri, 10% of the 593 plants in the state (146 MGD reported by 56 plants). The largest is Little Blue Valley Sewer District in Independence at 29.2 MGD.
Oxidation ditches are ring-shaped activated sludge reactors with long retention times, common at plants between 0.5 and 10 MGD. They are recognisable from the air by their looped channels and rely on surface aerators or brush rotors, which are frequent replacement and energy-efficiency projects.
The largest oxidation ditch plants in Missouri
| # | Facility | City | Avg flow (MGD) | NPDES permit | Expires | Violations (3y) |
|---|---|---|---|---|---|---|
| 1 | Little Blue Valley Sewer District | Independence | 29.2 | MOL101087 | Dec 2030 | 14 |
| 2 | Southwest WWTP | Springfield | 25.32 | MO0049522 | Jul 2025 | 0 |
| 3 | Metropolitan St Louis Sewer District-Grand Glaize Wastewater Treatment Plant | Valley Park | 10.4 | MO0101362 | Aug 2031 | 0 |
| 4 | Joplin Turkey Creek WWTP | Joplin | 5.7 | MO0103349 | Sep 2022 | 64 |
| 5 | Shoal Creek Wastewater Treatment Facility | Joplin | 5.6 | MO0023256 | Mar 2023 | 9 |
| 6 | St Peters Pws | Saint Peters | 4.83 | MO0030970 | Dec 2024 | 0 |
| 7 | Dcsd Wastewater Treatment Plant 2 | Weldon Spring | 4.28 | MO0116572 | Dec 2025 | 0 |
| 8 | Springfield NW WWTP | Springfield | 4.06 | MO0103039 | Jul 2025 | 0 |
| 9 | Duckett Creek Sanitation District Treatment Plant #1 | Saint Charles | 4.04 | MO0085472 | Jun 2021 | 0 |
| 10 | St Charles Missouri River WWTP | St. Charles | 3.73 | MO0058351 | Sep 2025 | 0 |
| 11 | MSD Fenton Waste Water Treatment Plant | Fenton | 3.6 | MO0086126 | Dec 2022 | 0 |
| 12 | Monett Wastewater Treatment Plant | Monett | 2.5 | MO0021440 | Jun 2029 | 17 |
| 13 | Branson Compton Drive WWTP | Branson | 2.26 | MO0025241 | Sep 2024 | 1 |
| 14 | Sikeston WWTP | Sikeston | 2.23 | MO0035009 | Sep 2025 | 0 |
| 15 | Lebanon WWTP | Lebanon | 2.22 | MO0089010 | Dec 2021 | 1 |
| 16 | Rolla Pws-Well 4 - E 10th St | Rolla | 2.17 | MO0050652 | Jun 2023 | 0 |
| 17 | Hollister WWTF | Hollister | 2 | MO0116041 | Dec 2024 | 2 |
| 18 | Neosho WWTP | Neosho | 2 | MO0104906 | Apr 2022 | 27 |
| 19 | Npsd Interim Saline Creek Regional WWTP | Fenton | 1.71 | MO0128490 | Jun 2023 | 0 |
| 20 | Center Creek WWTP | Webb City | 1.57 | MO0040185 | Apr 2030 | 151 |
| 21 | Nixa WWTF | Nixa | 1.52 | MO0028037 | Jun 2028 | 16 |
| 22 | West Plains Pws-West Plains Treatment Plt | West Plains | 1.46 | MO0096610 | Mar 2023 | 18 |
| 23 | Republic WWTP | Republic | 1.38 | MO0022098 | Jul 2029 | 5 |
| 24 | Fulton WWTP | Fulton | 1.37 | MO0103331 | Nov 2028 | 17 |
| 25 | Lake Of The Ozarks Regional WWTP 1 | Lake Ozark | 1.36 | MO0103241 | Dec 2025 | 12 |
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 Missouri
Oxidation ditches in other states
Oxidation ditches in Missouri: 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.