Abstract: A portable battery operated water vacuum intended for cleaning debris from the bottom of a hot tub, spa or shallow pool. A device handle houses the standard dry cell batteries, motor and on/off switch. A rigid tube connects the handle to the pump assembly. The rigid tube is sufficiently long to keep the handle assembly out of the liquid while the pump assembly is submerged, during use. The pump assembly comprises: a pump housing, impeller, inlet and outlet port. The impeller is located inside the pump housing and is connected to the motor by a shaft supported coaxially within the rigid tube. An inlet tip is connected to the inlet port and a removable filter bag is attached to the outlet port. When the unit is switched on, the impeller pulls water from the inlet tip and pushes it to the outlet port, trapping any debris in the filter bag.