What is the most common reason a sump pump fails 4

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The most common reason a sump pump fails is a stuck or jammed float switch, which prevents the pump from turning on when water rises or turning off when the water recedes. This often happens if debris, like gravel or small objects, gets lodged under the float, or if the switch itself wears out over time. Regular cleaning and testing can help catch this issue before it causes a flood in your basement.