The product is called a “water-powered sump pump,” some also call it a “water pump” or “water driven pump” either, way this pump it’s installed primarily as a backup sump pump to a primary electric sump pump (that’s plugged into the wall). In a heavy rain – flood situation – ground water under a house rises and pours into a sump pit where the primary electric sump pump, pumps the rainwater out of the sump pit keeping the basement dry.
The problem occurs when the power goes out and the primary sump pump no longer works. These wasteful pumps operate by taking the energy in municipal-supplied water at full pressure, run through a venturi device, positioned on the bottom of the sump pit in a basement. They connect directly to the fresh drinking water supply line of a house (plumber installed), or in some circumstances, homeowners connect the pump with a rubber garden hose to their kitchen or laundry room tub faucet (bad idea as many hoses have blown actually FLOODING the basement).
When the water powered sump pump is activated, clean fresh drinking water is released into the sump pit. Some of the more efficient models pull up 1 gallon of waste water, for each gallon of fresh water used, other, less efficient models use anywhere from 3 to 6 gallons of fresh water for every gallon of sump water! Then, both the fresh water and the wastewater are dumped out onto the lawn or into the sewer system that already has an overflow of storm water in it, making the flooding worse.
Please think twice before purchasing one of these water pumps,, not only do they waste water they MUST be installed with backflow protection, if not these pumps are a health hazard to your home as contaminated water could potentially be sucked back into the fresh drinking water supply for the house.