California’s lengthy drought has prompted state, regional and local officials to take a series of steps in recent years to restrict water use. One of the first measures lawmakers adopted was an urban conservation plan to ensure that future consumption in California’s cities would not outstrip a dwindling supply. Modeled on tough goals that had been passed to reduce energy use and limit the release of greenhouse gasses, the 20 x 2020 Water Conservation Plan aims for a 20% per capita reduction by 2020.