374Water Inc (NASDAQ:SCWO, FRA:8LL) has completed a key factory acceptance test for its AirSCWO system, moving the cleantech company closer to deploying the technology at one of California's largest wastewater treatment facilities. The North Carolina-based company said the milestone activates the next phase of its partnership with Orange County Sanitation District, which processes more than 180 million gallons of wastewater daily and serves over 2.6 million people across Orange County.