Assembly Bill #1750 would enact the Rainwater Capture Act of 2012, which would provide that use of rainwater collected from rooftops does not require a water right permit from the California state board.
Morning Chores lays out 8 viable solutions to bring water to your tiny house.
Pure Living for Life has provided a lot of information on their website. It’s a resource for all the different ways water could be utilized without the municipal need.
Chapter 15 of the California Plumbing Code provides guidelines on alternate water sources for non-potable applications, otherwise known as gray water.