**Sewage Backup Causes: How does sewage backup happen?** A sewage backup is a serious plumbing issue that can lead to major damage and health hazards. While it is a common problem, many people do not know what causes it or how to prevent it. **Common Causes of Sewage Backup:** * **Tree roots:** Tree roots can grow into sewer lines and cause blockages. * **Grease:** Grease poured down the drain can solidify and clog pipes. * **Flushing non-flushable items:** Flushing items such as paper towels, feminine hygiene products, and food scraps down the toilet can clog sewer lines. * **Collapsed or broken sewer lines:** Sewer lines can collapse or break due to age, corrosion, or ground movement. * **Improperly installed or maintained plumbing:** Poorly installed or maintained plumbing can lead to leaks and blockages that can cause sewage backups. **Effects of Sewage Backup:** * **Property Damage:** Sewage backups can cause significant damage to your home or business, including damage to floors, walls, furniture, and appliances. * **Health Hazards:** Sewage contains harmful bacteria and viruses that can cause illness. Exposure to sewage can cause skin infections, respiratory problems, and gastrointestinal problems. * **Structural Damage:** Sewage backups can weaken the structure of your home or business, making it more susceptible to collapse. * **Financial Losses:** Sewage backups can result in costly repairs and cleanup expenses. Businesses may also lose income due to being unable to operate during cleanup and repairs.