- (a) Connection between a public drinking water supply system and a wastewater treatment facility must be made through an air gap or a reduced-pressure principle backflow prevention assembly (RPBA) in accordance with American Water Works Association (AWWA) Standard C511-97 or AWWA Manual M14.
- (b) Each RPBA must be tested annually.
- (c) RPBA test results and maintenance records must be retained onsite for at least three years.
Source Note:The provisions of this §217.330 adopted to be effective August 28, 2008, 33 TexReg 6843.