Have you considered harvesting rainwater?  We have a new brochure from TCEQ on the subject of Harvesting Rainwater.  If you would like a copy, call our office and we will be happy to send a copy to you.  Rainwater can be harvested and stored for watering your flowers and other decorative plants around your home.  In times of drought, such as we have been subjected to for the last few years, we must do what we have to do to keep our plants healthy.