s Replace old high-flow toilets (4 to 7 gallons per flush) with water saving (3.5 gallons) or ultra low-flush toilets (1 to 2 gallons)* Install dams in toilet tanks, or fill a milk jug or plastic container with rocks and place it in the toilet tank Use graywater recycling/reuse systems for toilet flushing, irrigation, and other uses where permitted and appropriate *Plumbing in some buildings may n