Summary: we describe four types of pumps used to remove water from buildings or to lower water below a basement or crawl space floor to reduce the chances of water entry. 1. Submersible sump pumps Submersible sump pumps , such as shown in the photo at left, use a motor housed in a water proof enclosure and a separate float that turns the pump on and off. The sump pump float
Image Dimensions: 320 x 240
Image originally found here.