Crossposted from Clean Water Stories

Along a quiet residential street in Black Diamond, a large industrial truck draws curious looks from neighbors on a recent sunny morning. King County Wastewater Treatment Division’s new sewer cleaning truck has arrived.

“We’re basically pressure washing the pipe at 12 to 15 feet underground,” says Jim Giger, a conveyance inspector at WTD.

Large black and red hoses inserted into the opening of a maintenance hole. A worker’s boots are visible next to the maintenance hole lid. The Conveyance Inspection team lowers a suction hose and jet nozzle into the sewer line to remove sediment, wipes, and other debris that can clog pipes and equipment. Read more.