San Diego officials say within five years, the city will be recycling sewage into drinking water. The San Diego Union-Tribune says the mayor and others backed the plan known as Pure Water San Diego before the California Coastal Commission on Wednesday. The commission granted a request for San Diego to delay retrofitting an aging wastewater treatment plant for at least five more years if the city continues to pursue the recycling project. That allows San Diego to spend the money on building new water-recycling plants at an estimated cost of $3 billion.