Defrost food over night in the refrigerator or by using the defrost setting on your microwave. Consider installing an instant water heater on your kitchen sink so you don't have to let the water run while it heats up. This will reduce heating costs for your household. Insulate your water pipes. You'll get hot water faster plus avoid wasting water while it heats up.
Water lawns during the early morning hours when temperatures and wind speed are the lowest.
This reduces losses from evaporation. Raise the lawn mover blade to, at least, three inches. A lawn cut higher encourages grass roots to grow deeper, shades the root system and holds soil moisture better than a closely-clipped lawn. Consider using a commercial car wash that recycles water. If you wash your own car, park on the grass to do so.