Blocked drains are a common problem faced by many households in Brothybeck and the North West England region. The causes of blocked drains can range from improper disposal of materials to accumulation of debris in the pipes. Some of the most common causes include:

1. Grease and Fat: Fats, oils, and greases can accumulate in the drain, leading to blockages. These can come from cooking oil and other food waste that gets poured down the drain.

2. Foreign Objects: Non-degradable objects such as sanitary towels, wipes, and cotton swabs can get flushed down the toilet and cause blockages.

3. Tree Roots: Tree roots can grow into drainage pipes, causing blockages and damage.

4. Heavy Rainfall: Heavy rainfall can cause water to accumulate in the pipe and cause blockages.