Miami Beach, FL Landscaping Rules: Rainwater Harvesting (2026)

Rainwater harvesting is legal and encouraged in Miami Beach under Florida state guidelines. The Florida Department of Environmental Protection (DEP) approves onsite non-potable reuse of rainwater for landscape irrigation, vehicle washing, filling swimming pools and ornamental fountains, and in some cases toilet and urinal flushing. Collection systems must be properly filtered and disinfected as needed for the intended use. Miami-Dade County's 2010 interpretation memo clarifies that rainwater harvesting systems are permitted for residential and commercial properties. Storage containers must meet building code requirements and may require permits if they constitute permanent structures. On Miami Beach's barrier island, rainwater harvesting can supplement irrigation and reduce demand on the municipal water system, which is particularly relevant given the city's sea level rise adaptation efforts. Systems must not create standing water conditions that breed mosquitoes, which is a particular concern in South Florida. The Miami-Dade Mosquito Control Division monitors for standing water violations.