saving water

Hello gardeners! Garden is very important for me, but it requires lots of work and also water. I use many ways to save it. One of them is using right amount of water. It is really important for me, because I do not overwater plants and also I save it so there are two advantages in one. What is more, I collect rainwater and I think it is the easiest and the best way. What are your ways to save water?

I save shower water, put a bucket in the tub to collect water as I wait for it to warm up for my shower. I also have a 60 gallon rain barrel.

Rain water should be processed somehow, because it's bad due to pollution etc