A sump pump will be found inside the crock pit installed beneath the basement floor. The crock pit (if you have a pressure relief system) will be where the water under your home is collected. When the water reaches a certain level inside of the crock pit the sump pump ejects the water outside of your home. The specific pump that we use Zoeller 1/2 HP can eject up to 4300 GPH (Gallons Per Hour).
Read more here:
-Installing waterproof paint on foundation walls vs a pressure relief system (sump pump system)