The waters around Key West, Fla., are the cleanest in the state and home to the only living coral reefs in the continental United States. The city, wanting to reduce trash, oils, bacteria, and nutrients entering the water, received a grant from the National Fish and Wildlife Foundation to test stormwater filters on Duval Street, located in a major tourist area.Annalise Mannix, P.E., environmental programs manager for the city, selected Smart Sponge Plus from AbTech Industries in Scottsdale, Ariz., for 11 catch basins where water flows toward the beach. The filters have an antimicrobial agent that targets Enterococcus bacteria, fecal
