Try a few in your next home fixup project. Don't water your lawn every day. It will produce shallow roots and weak grass. A good soaking every 3 to 5 days is enough and helps conserve water. Every drop from the tap costs your municipality money in water treatment.
Water meters make it fair, and encourage conservation.
The more water we use, the greater the strain on treatment systems. Lobby for water meters and make it fair for everyone. Down the toilet. Use watersaving devices or a water efficient toilet. A slow leak can drive you crazy.