Chlorine disinfection: wastewater treatment plants in Florida
136 plants · 30% of the state · 366 MGD reported by 130 plants
Klarifi identifies 136 publicly owned wastewater treatment plants with chlorine disinfection in Florida, 30% of the 449 plants in the state (366 MGD reported by 130 plants). The largest is Mdwasa South District WWTF in Cutler Bay at 112.5 MGD.
Chlorine or chloramine disinfection, often followed by dechlorination before discharge, remains the most common effluent disinfection in the United States. Plants on gas chlorine are candidates for conversion to hypochlorite or UV, a recurring capital project driven by safety rules and permit limits on residual chlorine.
The largest plants with chlorine disinfection in Florida
| # | Facility | City | Avg flow (MGD) | NPDES permit | Expires | Violations (3y) |
|---|---|---|---|---|---|---|
| 1 | Mdwasa South District WWTF | Cutler Bay | 112.5 | FLA042137 | Dec 2022 | — |
| 2 | Plantation Regional WWTP | Plantation | 18.9 | FLA040401 | Nov 2027 | — |
| 3 | Southwest WRF | Cape Coral | 15 | FLA455458 | May 2026 | — |
| 4 | Boca Raton, City Of - WWTP | Boca Raton | 13.29 | FL0026344 | Sep 2028 | 8 |
| 5 | Daytona Beach Westside Regional WRF | Daytona Beach | 12.71 | FL0111392 | May 2029 | 4 |
| 6 | Port St Lucie Utilities (pslu) Glades WWTF | Port St Lucie | 12 | FLA326321 | Jun 2029 | — |
| 7 | Port St Lucie Utility Westport WWTF | Port St Lucie | 12 | FLA139653 | Sep 2031 | — |
| 8 | South Central Regional Wastewater Treatment Plant | Melbourne | 12 | FL0102679 | Jul 2026 | 0 |
| 9 | Southwest District WWTF | Jacksonville | 11.38 | FL0026468 | Aug 2029 | 4 |
| 10 | City Of Naples Wastewater Treatment Facility | Naples | 10 | FL0026271 | Mar 2029 | 14 |
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
Chlorine disinfection in other states
Chlorine disinfection 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: Tertiary treatment · Ozonation · WWTP · Lift station · Inflow and infiltration · all terms