Oxidation ditches: wastewater treatment plants in Nebraska
21 plants · 11% of the state · 7 MGD combined
Klarifi identifies 21 publicly owned wastewater treatment plants with oxidation ditches in Nebraska, 11% of the 198 plants in the state (7 MGD combined). The largest is City Of Columbus - Wastewater Treatment Facility in Columbus at 3.02 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 Nebraska
| # | Facility | City | Avg flow (MGD) | NPDES permit | Expires | Violations (3y) |
|---|---|---|---|---|---|---|
| 1 | City Of Columbus - Wastewater Treatment Facility | Columbus | 3.02 | NE0035025 | Jun 2030 | 4 |
| 2 | Aurora Burn Site | Aurora | 0.78 | NE0031810 | Mar 2028 | 0 |
| 3 | Waverly Wastewater Treatment Facility | Waverly | 0.52 | NE0024406 | Dec 2030 | 8 |
| 4 | Madison Waste Water Treatment Facility | Madison | 0.35 | NE0049174 | Dec 2026 | 10 |
| 5 | Hickman Wastewater Treatment Facility | Hickman | 0.33 | NE0046183 | Dec 2030 | 15 |
| 6 | Wahoo Wastewater Treatment Facility | Wahoo | 0.3 | NE0021679 | Jun 2027 | 15 |
| 7 | Eagle Wastewater Treatment Facility | Eagle | 0.22 | NE0112062 | Sep 2027 | 0 |
| 8 | Waterloo Wastewater Treatment Facility | Waterloo | 0.15 | NE0043311 | Sep 2026 | 31 |
| 9 | Louisville Wastewater Treatment Facility | Louisville | 0.14 | NE0024228 | Mar 2031 | 0 |
| 10 | Wilber Waste Water Treatment Facility | Wilber | 0.14 | NE0045373 | Jun 2031 | 0 |
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 Nebraska
Oxidation ditches in other states
Oxidation ditches in Nebraska: 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: Oxidation ditch · Activated sludge · Biological nutrient removal · Biosolids · Filter press · all terms