What are two common causes of septic system failure?

The identification of improper maintenance and overloading the system with water as common causes of septic system failure is crucial for understanding how these systems operate effectively.

Improper maintenance is a leading factor because septic systems require regular upkeep to function properly. This includes tasks such as pumping out the tank, inspecting components, and ensuring that the system is not clogged or damaged. Neglecting these maintenance tasks can lead to sludge buildup, which ultimately leads to system backup or failure.

Overloading the system with water is another significant issue. Septic systems are designed to handle a certain amount of wastewater over a period of time. When excessive water is introduced—often from multiple sources like prolonged showers, laundry, and excessive toilet flushing—the system can become overwhelmed. This can disrupt the natural filtration and treatment processes that occur within the septic tank and drain field, leading to system failure.

The other choices highlight positive practices or scenarios that do not contribute to failure. Using high-quality materials and conducting routine inspections, for instance, would typically lead to a healthier septic system rather than a failure. Similarly, infrequent use of the system and absence of trees nearby do not address the operational concerns that lead to failure. Regular maintenance and optimized water usage are beneficial practices but do not represent causes of