The answer to why your sump pump is clogged is typically due to debris, sediment, or other materials building up in the pump or the intake pipe. This can prevent the pump from properly drawing water and discharging it away from your home's foundation.
Some common causes of a clogged sump pump include leaves, dirt, sand, small rocks, and even dead animals getting into the sump pit. Over time, these materials can accumulate and restrict the flow of water, causing the pump to become clogged and unable to function properly.