Which of the following can improve the effectiveness of a septic system?

Regularly pumping and inspecting the septic system is critical for maintaining its effectiveness and longevity. This practice helps to remove accumulated solids and sludge from the tank, preventing clogs and the potential backup of waste into the home. Inspections allow for the early detection of any malfunctions or deterioration in the system, such as leaks or issues with the drain field. By staying on top of maintenance through regular pumping and inspections, homeowners can ensure their septic system continues to operate efficiently, reducing the risk of costly repairs and health hazards associated with septic failure.

While other options may have beneficial effects in specific scenarios, they do not ensure the comprehensive maintenance and performance improvements that regular pumping and inspection provide. For instance, minimizing water usage can help alleviate stress on the system, planting grass can aid in erosion control, and using chemical additives might seem beneficial, but only proper maintenance through pumping and inspections guarantees the system's overall health.