More than 30 million gallons flow through Boise's two wastewater treatment plants each day, where biosolids are segregated before sending cleaned and disinfected water back into the Boise River. Boise operates two huge wastewater treatment facilities: one, about 75 acres in West Boise, and another, approximately 20 acres at Lander Street. Each is licensed by the Environmental Protection Agency. The EPA is currently drafting new regulations that will dramatically change how Boise treats its precious resource. Those changes won't come cheap, and that's the subject of our main news story in this week's BW.