Here is a letter from Florida Senator Bill Nelson to the EPA about the Valdosta wastewater situation, and the EPA’s response, which was underwhelming.
A suggestion: say what it is you’d like the EPA, GA-EPD, FDEP, etc. to actually do. And what I’d suggest is get them all to fund and implement regular, frequent, closely spaced, water quality monitoring along all the rivers in the Suwannee River Basin. That way we’d know where pollution is coming from, we’d be able to calibrate what cities including Valdosta say from their own monitoring, and we’d have baselines to compare to.