Domestic water booster pumps are auxiliary pumps which are used to increase or maintain pressure in a potable water system. Booster pumps are most commonly used in systems where there is an inconsistent demand for water. When the demand is low, the booster pump is on standby. When the demand is high, the booster pump is activated and maintains the necessary water pressure to meet the newly increased demand.
Booster pressure systems typically incorporate one or more pumps, including the tanks and control devices. The systems are designed to maintain adequate water pressure in "mid-rise" structures, low-pressure areas, "high-rise" structures, and facilities that have a high variance in water demand. Booster pressure systems are triggered to operate when the rate of water usage increases or the water supply pressure drops below acceptable levels.