a pit or pool in the lowest area of a building where liquid collects and drains; a drainage system for removing excess water.
From Middle Dutch 'somp' (swamp, bog) or Low German 'Sump'. The word originally meant a marshy area and evolved to mean any low collecting point for water.
A sump pump in your basement is your home's unsung hero—it quietly prevents flooding and mold by pumping water away, and most people never think about it until it fails.
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