Some useful links..
AWBD
http://awbd.org/
North Harris County Regional Water Authority
http://www.nhcrwa.org/
North Fort Bend Water Authority
https://www.nfbwa.com/
Save Water Texas
http://savewatertexas.org/
Texas Commission on Environmental Quality
https://www.tceq.texas.gov/
Texas Water Development Board
https://www.twdb.texas.gov/
West Harris County Regional Water Authority
https://www.whcrwa.com/