The California drought is entering its 4th year and it is not looking good. If you didn’t change your shower heads last year then it is time to do it now. You should be using a 1.75, 1.5 GPM or less and limiting your shower time to 8-10 min. If you can do it in less time then you will save even more water!
So what about your landscaping? There are many ways to do this. When you turn on your shower first thing you get is cold water. Put a bucket in your shower and catch all of this cold water and then you can use this for watering plants.
You can also look at a reclaimed water system for your used laundry water. This water does not need to be treated before you can water your plants with it. You will also want to check what kind of laundry soap you are using so it will be ok for your plants. (Sulfate Free soap).
Read more current news about the California drought in this article from NBC News.