Let's Save Water — LOOKING AROUND ENVIRONMENTAL STUDIES STD 3 — Question

We should take the following steps to save water in the house :
$(1)$ We should take just as much water as we want to drink in a glass, so that we do not need to throw away any left over water.
$(2)$ While bathing, we should first fill the bucket. Then we should close the tap and have a bath.
$(3)$ We should use just as much water as is needed while washing clothes and utensils.
$(4)$ We should keep taps running only for as much time as needed.
$(5)$ We should close the tap while brushing and shaving.
$(6)$ Instead of throwing away water left over after washing vegetables, fruits, etc. and the waste water of water purifiers, we should water plants with it. That water can also be used to mop the floor.