Attributes . AWWA A-21.10, AWWA A-21.11, AWWA A-21.16, AWWA A-21.4, AWWA A-21.51, AWWA C-104, AWWA C-110, AWWA C-111, AWWA C-116, AWWA C-151, AWWA C-600, AWWA C-651 . Names