By: Jimmy Bell; Eljen – jbell@eljen.com This presentation delves into the critical aspects of identifying and diagnosing failures in septic drain field systems within the onsite wastewater industry. It is designed for professionals, regulators, and technicians who are responsible for maintaining, evaluating, and troubleshooting septic systems to ensure environmental safety and compliance. The session covers common causes of system failure, including improper design, installation errors, soil incompatibility, and long-term maintenance issues. Through real-world examples, case studies, and step-by-step guidance, participants will gain practical insights to prevent system failures, extend the lifespan of septic systems, and protect public health and the environment.