In May 2017, Colorado’s Metro Wastewater Reclamation District (Metro District) opened its Northern Treatment Plant (NTP), one of the most advanced treatment facilities in the western United States. The overall $475 million NTP program included a $302 million treatment facility that was delivered $35 million less than original budget estimate, and design and construction of the South Platte Interceptor, a nearly seven-mile gravity pipeline that conveys flow to the NTP. With capacity to treat 24 mgd, …