Mast, who represents Martin, St. Lucie and parts of Palm Beach counties, urged Pahokee Mayor Keith Babb to "provide alternative housing options" for residents living around the marina until the water is determined to be safe. Algae in the marina contained 860 parts per billion of the toxin microsystin, state data updated Wednesday shows. At 8 parts per billion, microsystin makes water too hazardous to touch, ingest or inhale for people, pets and wildlife, the EPA says. Babb had not responded to Mast's letter as of Thursday afternoon, spokesperson Brad Stewart said. Nor had he answered TCPalm's questions about how many residents would have to be relocated and where they could possibly go.