BY STAFF REPORTS
Gov. Ron DeSantis has signed SB 848, giving Florida’s regional stormwater treatment framework a clearer statutory footing after the state’s 2024 update to Environmental Resource Permitting water quality rules.
The bill does not change the underlying stormwater performance standards. Those remain in the ERP program. The practical change is how those standards may be met.
SB 848 defines and authorizes Regional Stormwater Management Systems, or RSMS, as facilities that generate pollutant reduction allocations. Those allocations may be used by ERP applicants within a defined drainage area to satisfy applicable stormwater treatment requirements. The bill also requires RSMS applicants to demonstrate financial responsibility for construction, operation and long-term maintenance and requires permits to identify the area served by the system.
The bill also confirms the role of Water Quality Enhancement Areas, or WQEAs. These systems generate enhancement credits that may also be used for ERP stormwater treatment compliance. SB 848 requires DEP to adopt WQEA rules by October 1, 2026, while allowing provisional permits in the interim if statutory criteria are met. Credits issued and used under provisional permits must continue to be recognized after final rules are adopted.
The problem SB 848 addresses is not that off-site treatment was unavailable. Florida’s ERP rules have long allowed compensating treatment in appropriate circumstances. The problem has been consistency. Applicants, engineers, regulators and local governments have needed clearer direction on when regional treatment may be used, who remains responsible for performance and how service areas should be defined.
SB 848 moves that framework from exception to a regular compliance pathway.
In practice, this matters for project design. Engineers will need to evaluate regional treatment options earlier in the planning process. Developers and public sponsors will need to compare onsite treatment, compensating treatment, RSMS allocations and WQEA credits based on cost, schedule, receiving-water constraints and nutrient reduction performance.
The bill also adds guardrails. Regional systems must show financial capacity. Service areas must be defined. Credits and allocations must be tied to the hydrologic area they serve.
The market impact may be significant, but it should not be overstated. SB 848 does not create unlimited stormwater trading, and it does not eliminate onsite design obligations. It creates a more structured pathway for regional systems to compete with traditional onsite treatment when they can produce equivalent or better water quality results.
Florida’s stormwater program is becoming more performance-based and more location-flexible, but not less regulated.
For permit applicants, the takeaway is straightforward: stormwater compliance should now be evaluated as a portfolio of tools. Onsite stormwater ponds will remain important. But RSMS allocations, WQEA credits, and other forms of compensating treatment are now part of the standard design toolbox.
