Water samples at water quality laboratory at Michelson Water Reclamation Plant, Irvine Ranch Water District, Irvine, California, USA. The Michelson Water Reclamation Plant in Irvine treats up to 18 million gallons of wastewater (sewage) per day. The recycled water can be used for any purpose except drinking, like landscape irrigation in parks, golf courses, school grounds, city street medians, other public areas. The recycled water is piped through a completely separate recycled pipeline system.