The answer to 'why is my drain burst pipe' is that a burst pipe is typically caused by a blockage or obstruction in the drain line that leads to excessive pressure buildup. This can happen due to a buildup of debris, hair, grease, or other materials that restrict the flow of water. Over time, this pressure can cause the pipe to crack or burst, leading to a leak or flood.
Common symptoms of a burst drain pipe include slow or backed-up drains, water pooling around the drain, and potentially visible cracks or damage to the pipe itself. If left unaddressed, a burst pipe can cause significant water damage to your home.