Pressure Pumps are also known as boost pumps and it is used to raise the water pressure which is supplied to our homes. A booster pump is also used to pressurize the water from a storage tank and transport it to a faucet or throughout a home. The water stored in a storage tank should be transported in homes in order to use it to flush toilets or wash laundry. You would use a booster pump for the movement of the water.