ed to pumps, pressurization, filtration, treatment, or other equipment and controls, and irrigation water pumps, circular irrigating system's pumps and pump houses.This specialty may also perform the work defined in (c) of this subsection.Also see RCW 18.106.010 (10)(c).(c) Domestic pump (03A): Limited to the extension of a branch circuit, which is supplied and installed by others, to signaling ci