Mayor Lenny Curry wants to be known as the Septic Tank Slayer. So, how’s he doing? Curry took office in June 2015. From 1/1/2015 to 5/25/2021, there were 2,739 new Onsite Sewage Treatment & Disposals System (septic tank) construction permits issued in Duval County, according to the Florida Dept. of Health. That’s more than one…