Wayne Johnson, 67, retiring as Statesboro’s water and wastewater director, leaves a system with more than 2.5 times as many customers as it had when he came to work for the city 34 years ago, but which sends a million gallons less waste water to the treatment plant each day than it once did. Through the water reclamation system whose installation he oversaw in 2011, some of that waste water is now purified to the point that the city sells it to Georgia Southern University for use in irrigating campus greenery. On the water supply side, meter readers will soon be assigned to other duties, as water usage data will stream digitally to City Hall.