A standard battery powers a regular sump pump alarm. This is an effective method of keeping basements free from any sort of flooding. The Importance Of Sump Pumps Yes, a sump pump pit with no water is good news, and it means your basement is not collecting any water. How does a sump pump work in a pool . How does a sump pump work? The pump is equipped with valves that sense escalating water levels or pressure. However, a sump (submersible) pump works with the aid of electrical energy and requires pipes or hose attachments that will conveys drained water out for dumping. When the water level rises the float switch begins to float and activates the sump pump. It must be carefully placed to ensure that the water does not rush back to the foundation. These pumps use an effluent, otherwise known as a discharge line, to remove water. When we speak of sump pumps, we are referring to a device that can be submerged in water. A sump pump job is to keep the crawl space and b...