Activated sludge and clarifiers: wastewater treatment plants in Florida
394 plants · 88% of the state · 1,330 MGD reported by 386 plants
Klarifi identifies 394 publicly owned wastewater treatment plants with activated sludge and clarifiers in Florida, 88% of the 449 plants in the state (1,330 MGD reported by 386 plants). The largest is Central District Wastewater Treatment Plant in Key Biscayne at 117.2 MGD.
Activated sludge is the standard mechanical process for cities: aeration basins where bacteria consume organic matter, followed by clarifiers that settle the biomass out. These plants are identified by their circular or rectangular clarifiers and by the suspended-growth process code, and they are the main market for blowers, diffusers, clarifier mechanisms and instrumentation.
The largest activated sludge plants in Florida
| # | Facility | City | Avg flow (MGD) | NPDES permit | Expires | Violations (3y) |
|---|---|---|---|---|---|---|
| 1 | Central District Wastewater Treatment Plant | Key Biscayne | 117.2 | FL0024805 | Dec 2025 | 65 |
| 2 | Mdwasa South District WWTF | Cutler Bay | 112.5 | FLA042137 | Dec 2022 | — |
| 3 | East Central Regional Water Reclamation Facility | West Palm Beach | 70 | FLA041360 | Jul 2031 | — |
| 4 | Fort Lauderdale - G T Lohmeyer WWTP | Ft Lauderdale | 61.58 | FLA041378 | Dec 2026 | — |
| 5 | Southern Regional WWTP | Boynton Beach | 35 | FLL041424 | Dec 2030 | — |
| 6 | T P Smith Water Reclamation Facility | Tallahassee | 26.5 | FLA010139 | Aug 2028 | — |
| 7 | Orlando - Conserv Ii WRF | Orlando | 25 | FLA010814 | Dec 2026 | — |
| 8 | Jea Buckman WWTP | Jacksonville | 21.38 | FL0026000 | Dec 2030 | 66 |
| 9 | St. Petersburg, City Of - Southwest WRF | St Petersburg | 20 | FLA128848 | Jun 2028 | — |
| 10 | St Petersburg Northwest WRF | St Petersburg | 20 | FLA128821 | Sep 2030 | — |
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 Florida
Activated sludge and clarifiers in other states
Activated sludge and clarifiers in Florida: 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: Activated sludge · Biological nutrient removal · Equalization tank · Biosolids · Filter press · all terms