Seminole County, FL Environmental Rules: Stormwater Management (2026)

Sec. 397(a) prohibits discharging or causing to be discharged any pollutant, or water containing a pollutant, into the County's MS4 or other watercourses beyond plain stormwater, tying the rule to NPDES Permit No. FLS000038. The section carves out a specific exempt list rather than a vague catch-all: water line flushing, landscape irrigation runoff, diverted stream flows, uncontaminated groundwater infiltration, air conditioning condensation, non-commercial vehicle washing, dechlorinated pool water (under roughly one part per million chlorine), and firefighting water are all allowed. Sec. 401 separately prohibits illicit connections and illicit discharges outright, and makes a facility owner's failure to report a construction or industrial connection or discharge to the MS4 itself count as the violation.

Sec. 398 gives the County authority to suspend a violator's MS4 access without prior notice in an emergency posing imminent danger, and to terminate access after notice and an opportunity to petition for reconsideration where termination would stop an ongoing illicit discharge. Code Enforcement Officers under Sec. 402 can enter and inspect any regulated facility as often as necessary, install monitoring equipment, and seek a search warrant if access is denied.