yes we can used less without wastage ground water. i can change some activities of our daily life.Water the lawn and plants during the coolest parts of the day and only when they truly need it. Make sure you, your family, and your neighbors obey any watering restrictions during dry periods.A rain barrel is a great way to save on water and it's not chlorinated, fluoridated or loaded with dissolved salt so it's better for your grass and plants. Consider reducing the size of your lawn by planting trees, shrubs and ground covers. Rain gardens are attractive, low maintenance, and they reduce runoff to lakes and streams.