Operators of MS4s that are regulated by the NPDES (including Sarasota County) are required to develop and implement a comprehensive Stormwater Management Program (SWMP) that must include pollution prevention measures, treatment or removal techniques, monitoring, use of legal authority, and other appropriate means to control the quality of stormwater discharged from the MS4. The Sarasota Stormwater Environmental Utility (SEU), established in 1989 by an interlocal agreement, is responsible for administering the Sarasota County NPDES permit and for managing its MS4.
The SWMP outlines the goals, strategies and programs that have been established to improve water quality. It addresses existing and future conflicts between flooding, development, and preserves, and describes how valuable natural resources can be enhanced. Components of an SWMP typically include public education and outreach, public involvement, illicit discharge prevention, detection and elimination, construction and post-construction site runoff control, pollution prevention/good housekeeping for municipal operations, water quality monitoring and watershed assessment.
As the agency within Sarasota Government responsible for the county NPDES permit, the Sarasota SEU is responsible for stormwater planning. It administers and updates the SWMP and creates individual Basin Master Plans as part of its planning process. These plans address flooding and pollution discharge concerns in each of the County's stormwater basins. A map of the 27 Sarasota County stormwater basins may be found here, and Stormwater Basin Master Plans may be found in the Water Atlas Digital Library.