Oxidation ditches: wastewater treatment plants in Utah
8 plants · 31% of the state · 6 MGD reported by 2 plants
Klarifi identifies 8 publicly owned wastewater treatment plants with oxidation ditches in Utah, 31% of the 26 plants in the state (6 MGD reported by 2 plants). The largest is Cedar City Regional Wastewater Treatment Facility in Cedar City at 4.29 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 Utah
| # | Facility | City | Avg flow (MGD) | NPDES permit | Expires | Violations (3y) |
|---|---|---|---|---|---|---|
| 1 | Cedar City Regional Wastewater Treatment Facility | Cedar City | 4.29 | UT0024970 | Jun 2028 | 0 |
| 2 | Snyderville Basin Water Reclamation District | Park City | 1.8 | UT0020001 | Apr 2031 | 0 |
| 3 | Ashley Valley Water & Sewer Imp Dist | Vernal | — | UT0025348 | Nov 2021 | 1 |
| 4 | Brigham City Corporation Waste Water | Brigham City | — | UT0022365 | Apr 2030 | 1 |
| 5 | Magna Water District WWTP | Magna | — | UT0021440 | Mar 2029 | 0 |
| 6 | Orem City Corporation | Orem | — | UT0020915 | Mar 2031 | 2 |
| 7 | Salem City Water Reclamation Facility | Salem | — | UT0026085 | Mar 2029 | 2 |
| 8 | Timpanogos Special Serv. Dist. | American Fork | — | UT0023639 | Dec 2030 | 1 |
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 Utah
Oxidation ditches in other states
Oxidation ditches in Utah: 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.