When Marin last considered building a desalination plant on San Francisco Bay more than a decade ago, residents wary of the high financial and environmental costs reacted by giving voters the power to make that decision.

Now comes the question: should voters retain the power to block what could be an emergency source of water in the event of another crisis?

“The strange weather we’ve had the last few years I think suggests that having more options in the event of a similar kind of emergency we were in this past year is prudent,” Marin Municipal Water District General Manager Ben Horenstein told the district Board of Directors on Tuesday. “With this ordinance in place, it does limit our ability in certain ways to move forward if we wanted to with an emergency desal system.”