Which action is discouraged to extend the life of a septic system?

Flushing non-biodegradable items down the toilet is discouraged to extend the life of a septic system because these items do not break down in the system and can cause significant blockages and malfunctions. Septic systems rely on the natural decomposition of organic waste by bacteria. Non-biodegradable items, such as plastics, feminine hygiene products, and certain cleaners, can accumulate in the tank and pipes, leading to clogs and preventing the proper flow of waste. This ultimately puts additional strain on the system and can lead to costly repairs or even complete system failure.

In contrast, regular pumping of the system helps remove accumulated sludge and scum, thereby maintaining proper functionality, while avoiding harmful substances and conserving water usage are both good practices that contribute positively to the longevity and efficiency of the septic system.