"Chapter I: The San Antonio Water System". 2014 Stats Book(PDF). San Antonio Water System. Archived from the original(PDF) on 2016-07-06. Retrieved 9 May 2018.
web.archive.org
"Chapter I: The San Antonio Water System". 2014 Stats Book(PDF). San Antonio Water System. Archived from the original(PDF) on 2016-07-06. Retrieved 9 May 2018.