A water pump is useful for a variety of applications. You can use it to water your garden during the summer or it can come in handy if your drain becomes blocked or flooded. Depending on the type of pump, they can handle different tasks. For instance, a booster pump can be used to water your shrubs and flowed beds and to supply water to your washing machine from an external water source. A submersible pump can be used for both clean and dirty water which makes it great for removing flood water from a basement or cellar. Submersible pumps are also good for drainage and bilge pumping.