Drain backups are a common problem in New Zealand, especially in older homes. There are a number of factors that can contribute to drain blockages, including household habits and the design of the drainage system.

Common Causes of Drain Backups in New Zealand

1. Tree roots: Tree roots are one of the most common causes of drain backups in New Zealand. As trees grow, their roots can penetrate the pipes and cause blockages. This is especially common in older homes.
2. Grease and fat: Grease and fat from cooking can build up in the pipes and cause blockages. This is especially true if the grease is not properly disposed of.
3. Hair: Hair can also build up in the pipes and cause blockages. This is especially common in showers and bathtubs.

Household Factors Contributing to Drain Blockages

1. Flushing wipes: Flushing wet wipes down the toilet is a common cause of drain backups. Wipes are not biodegradable and can clog the pipes.
2. Using harsh chemicals: Using harsh chemicals to clean drains can damage the pipes and make them more likely to clog.

If you are experiencing drain backups, it is important to identify the cause of the problem. Once you know the cause, you can take steps to prevent future backups.