Sump Pumps for Basements and Crawlspaces
A sump pump can help keep your basement or crawl space dry, eliminating excess moisture and groundwater from seeping into your home.

If unwanted water is making its way into your basement, then you may want to consider installing a sump pump.
A sump pump works to keep ground water from making its way into your home. The sump pit - located within the sump pump - is set to a particular level that will trigger the pump to remove water once a maximum has been reached.
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See All PhotosSump pumps are also useful for removing moisture if it has already made its way into a basement. The sump pump does not work to keep leakage from entering through the walls of a basement, but instead to reduce ground water that may cause or worsen an already existing problem.
It is possible to install a sump pump on your own; however, it does require a great deal of work and the use of heavy machinery, like a jackhammer. For this reason, you may want to consider the opinion of a professional who has the necessary equipment at his or her disposal.
See also: Preventing Basement Moisture