What constitutes a Failing Onsite Wastewater System?

A failing onsite wastewater system is characterized by its inability to discharge effluent properly. This proper discharge is critical for maintaining environmental health and preventing contamination of groundwater and surface water. When a system is functioning correctly, it effectively treats and disperses wastewater, ensuring that harmful contaminants are sufficiently removed before entering the environment. If a system cannot fulfill this function, it may lead to issues such as sewage backing up, unpleasant odors, or causing health hazards due to the presence of untreated waste. Therefore, the identification of improper effluent discharge is a clear indicator that an onsite wastewater system is failing.

The other options reflect scenarios where the system is operational, meets regulatory standards, or has received construction approval, indicating that they are functioning as intended rather than exhibiting failures.