Which of the following is a method to prevent septic system failure?

Regular maintenance and mindful water usage are key methods for preventing septic system failure. Maintenance includes routine inspections and pump-outs, which help to identify and address potential problems before they become severe. Mindful water usage refers to being conscious of how much water is used in the home, as excessive water can overwhelm the septic system, leading to backups and failures.

Water-efficient fixtures, spreading laundry throughout the week, and ensuring that the system isn’t overloaded can significantly reduce the stress on the septic system. By adhering to these practices, homeowners can prolong the lifespan of their septic systems and promote proper function, leading to fewer problems and costly repairs.

The other options would lead toward negative impacts on the system. For example, disposing of chemicals down the drain can kill beneficial bacteria essential for breaking down waste in the septic tank. Reducing the size of the drain field may not ensure adequate drainage or treatment of effluent, while only using the system during dry seasons could result in improper use and neglect of necessary maintenance during other times of the year.