What activity can contribute to septic system failure?

The use of heavy chemicals in household cleaning can significantly contribute to septic system failure. Septic systems rely on a balanced environment of beneficial bacteria that break down waste and solids in the tank. Heavy chemicals, such as bleach, solvents, or antibacterial agents, can disrupt this natural bacterial ecosystem. When these chemicals are introduced into the system in large quantities or frequently, they can kill off the essential bacteria needed for proper waste decomposition, leading to system malfunctions, backups, or complete failure over time.

In contrast, occasional use of a washing machine typically does not cause harm if managed properly, as long as the system is designed to handle the water load. Regular pumping of the septic tank is a good maintenance practice that helps prevent system issues by removing solids and sludge build-up, reducing pressure on the system. Using the septic system exclusively for human waste and minimal other materials is ideal, as it minimizes additional strain on the system, allowing it to operate efficiently.