Check for toilet leaks
Put a little food coloring in each toilet tank. Without flushing, watch for a few minutes to see if the color shows up in the bowl. It's not uncommon to lose up to 100 gallons a day from one of these otherwise invisible toilet leaks. And that's more than 30,000 gallons a year!
Check every faucet in your home for leaks. Just a slow drip can waste 15 to 20 gallons a day. Fix it and you save almost 6,000 gallons a year.
Take shorter showers
Long, hot showers can waste five to ten gallons every unneeded minute. Limit your showers to the time it takes to soap up, wash down, and rinse off.
Use dish washers andwashing machines for full loads only
Even when the machines feature short cycles, you're being more efficient with your water when there are enough dirty things for a full load.
Water your lawn only when it needs it
Do it early in the morning or later in the evening, not in midday heat. Avoid windy days. See that water goes where it should, not on sidewalks or driveways. Stick a spade in the ground now and then to see that water is getting down deep. A good soaking encourages good root systems. But remember this: a single lawn sprinkler spraying five gallons per minute uses 50% more water in just one hour than a combination of ten toilet flushes, two 5-minute showers, two dishwasher loads and a full load of clothes.