As the adage goes, 'measure twice, cut once.' When it comes to DIY septic system installation, installation errors can lead to costly and dangerous consequences. One common mistake is not properly sizing the system for the household's needs, resulting in frequent backups and maintenance challenges. Inadequate soil testing and improper placement can also lead to system failure. Maintenance challenges can arise from not regularly pumping the tank or properly disposing of waste, leading to clogging and damage to the drain field. To avoid these pitfalls, it is important to carefully research and plan the installation, including following local regulations and enlisting the help of professionals when necessary. Regular maintenance and proper waste disposal are crucial for ensuring the longevity and safety of the system.