Pale Blue Water Hall-effect thruster offers ideal balance of thrust and isp performances. It is a fully integrated system that incorporates thruster head, fluidics, PPU and propellant tank, and is clusterable, and/or flexible for a tailored configuration to meet a wide range of mission requirements. The system is based on the traditional Hall thruster technology but is optimized to operate on water to receive additional benefits. The propellant is preloaded to the tank prior to delivery from factory so that satellite integrators would not have to deal with complex fueling work.