Refrain from turning the water on full blast while making ablution (wudu). Turn the water off while brushing your teeth or while shaving. Take shorter showers. Refrain from taking long showers especially in the winter. I know. It feels so good.
Don’t run the dishwater unless it is full to its designated capacity. The same goes for your washer. If you wash dishes by hand, refrain from letting the water run while rinsing.
Collect the water from the bathroom sinks and shower that goes down the drain wastefully while waiting for the water to get warm. Use it to water the plants or mop the kitchen floor.
Raise your awareness! Build your consciousness!