Lagoon systems: wastewater treatment plants in Florida
28 plants · 6% of the state · 125 MGD reported by 26 plants
Klarifi identifies 28 publicly owned wastewater treatment plants with lagoon systems in Florida, 6% of the 449 plants in the state (125 MGD reported by 26 plants). The largest is Southern Regional WWTP in Boynton Beach at 35 MGD.
Lagoon systems treat wastewater in large earthen ponds over weeks of retention time, with or without mechanical aeration. They serve thousands of small towns because they are cheap to run, but they struggle with ammonia and nutrient limits, fill with sludge over decades and are the plants most often converted or upgraded when a permit is renewed.
The largest lagoons in Florida
| # | Facility | City | Avg flow (MGD) | NPDES permit | Expires | Violations (3y) |
|---|---|---|---|---|---|---|
| 1 | Southern Regional WWTP | Boynton Beach | 35 | FLL041424 | Dec 2030 | — |
| 2 | Daytona Beach Westside Regional WRF | Daytona Beach | 12.71 | FL0111392 | May 2029 | 4 |
| 3 | South Central Regional Wastewater Treatment Plant | Melbourne | 12 | FL0102679 | Jul 2026 | 0 |
| 4 | Loxahatchee Environmental Control District - WWTP | Jupiter | 11 | FL0034649 | Mar 2029 | — |
| 5 | City Of Naples Wastewater Treatment Facility | Naples | 10 | FL0026271 | Mar 2029 | 14 |
| 6 | Port Charlotte, City Of - Charlotte County Utilities/ Eastport WWTP | Port Charlotte | 9 | FL0040291 | Nov 2027 | — |
| 7 | Deland, City Of - Wiley M Nash Rwsf | Deland | 6 | FL0020303 | Nov 2028 | 1 |
| 8 | Blacks Ford WRF | Jacksonville | 4.93 | FL0174441 | Jun 2031 | 4 |
| 9 | Plant City WRF | Plant City | 4.47 | FL0026557 | Feb 2031 | 7 |
| 10 | Jea Greenland WWTF | Jacksonville | 3.19 | FL0A00023 | Feb 2027 | 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 Florida
Lagoon systems in other states
Lagoon systems 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: WWTP · POTW · Biosolids · Tertiary treatment · Significant industrial user · all terms