A leaky toilet wastes hundreds of gallons a day. When installing a new toilet, consider a small-capacity model. They are usually less expensive and cut down significantly on the amount of water used. Take shorter showers. Get wet, turn off the water, lather up, then turn on the water to rinse.
Showers require less water than tub baths.
Every inch in the tub equals approximately five gallons of water. Up to five gallons a minute goes straight down the drain when taps are left running to shave or brush teeth. Turn on the water only when needed. Flow restrictors should be added on faucets to reduce water usage. In The Kitchen. . .