Kitchen

Install a low-flow faucet aerator, which can cut water use in half.
Soak pots and pans before washing. When washing dishes by hand, fill one sink or basin with soapy water.
Fill the basin or a pan with water to wash fruits and vegetables.
Wash only full loads in the dishwasher.
Keep a pitcher of water in the refrigerator rather than running tap water until it is cool enough to drink.
Never put garbage of any kind down the sink drain- cooking greases, household cleaners, paints, pesticides, and other chemicals can be very harmful to the environment and your piping system.
Install an aerator attachment on your sink faucets and reduce water use by 25-50%
When buying a new dishwasher, consider purchasing a water-saving model. Newer models can cut water use by 25 percent and are no more expensive than non-conserving models.

Bathroom

Check regularly for any leaks and fix them. Most common bathroom leaks are found in faucets and in and around toilets.
Replace older, larger-use toilets with the newer ultra-low flush models. Standard toilets manufactured prior to the 1980s usually require 15 to 20 liters per flush. Toilets sold during the 80s and early 90s use 13 liters per flush.
Do NOT use the toilet to dispose of paper, facial tissues, or cigarettes.
Take a five-minute shower.
Use the minimum amount of water needed for a bath by closing the drain and filling the tub only 1/3 full.
Install a low-flow showerhead. It can save about half the amount of water you typically use in the shower, while still providing a refreshing, cleansing shower.
Turn the tap water off while brushing your teeth, shaving, or washing your face.
If the toilet flush handle frequently sticks in the flush position, letting water run constantly, replace or adjust it.

When buying a new clothes washer, consider purchasing a water-saving model. New horizontal axis models can save up to 40 percent of the water used by a conventional model. Check with your municipality to see if they provide rebates on the purchase of water-saving clothes washers.
Wash only full loads in the clothes washer.
Insulate your water pipes. You'll get hot water faster plus avoid wasting water while it heats up.

If washing dishes by hand, be sure to turn off the tap while washing.