Rainwater Collection and Treatment
The Texas Water Development Board has information about rainwater harvesting.
If you are thinking of using rain as a source of water—and especially if you intend to use it for drinking, cooking, or washing dishes—you should ask these questions first:
- How much rain falls in your area?
- How much area can you use to collect rain?
- How much water can you store?
- What kind of water treatment will ensure that it is safe to use?
The Texas Water Development Board has more information about harvesting rainwater. 
