Texas suffered through one of its worst-ever droughts last year, and it took a toll on water supplies. Dallas never came close to running out, but plummeting reservoir levels did prompt the City Council to take action and implement mandatory watering restrictions. Under the rules, homes and businesses can water lawns only twice per week. More than that means a possible fine from the city. Enforcement has been lax as drought conditions have eased, but the decision hopefully signals a turning point when politicians and the people who elect them recognize that maintaining water-thirsty swaths of St. Augustine and Bermuda grasses in Texas is unsustainable and, with a booming population and water resources that are more or less fixed, is a practice that will have to end.