… The Water Renaissance Plan calls for a collective commitment to developing local water supplies. It outlines eight priority recommendations, from policy reforms to the creation of new sources of funding, such as a general obligation water bond focused on local water supplies. The group, composed of a variety of nonprofit and advocacy organizations, including the Sierra Club, claims that sustainable technologies like stormwater capture, wastewater recycling, and conservation could yield between 1.8 and 2 million acre-feet of local water supplied by 2045, at a lower price tag than the delta tunnel. And local water is much more reliable in the face of climate change. … Models predict at least an 8 percent reduction in imported water supplies by 2050. … Can they convince lawmakers and state agencies that have long favored engineered solutions?