Below are links to both the Wichita Falls website with information about the process they went through, an NPR article covering the project, and a link to register for the workshop to hear Mr. Nix in person.
See you there!
http://www.wichitafallstx.gov/index.aspx?NID=1595
http://www.npr.org/2014/05/06/309101579/drought-stricken-texas-town-turns-to-toilets-for-water
http://www.iamu.org/index.cfm/52940/52595/2014_waterwastewater_operators_workshop