What might be an indication of septic system failure?

Unpleasant odors near the tank are a significant indicator of septic system failure. This can occur when waste materials are not breaking down properly or when the tank is full and hasn't been pumped in a while. As the system struggles to handle the waste, gases can escape and produce foul smells in the vicinity of the septic tank or drain field, indicating that the system is not functioning as intended and may require immediate attention.

In contrast, healthy grass growth over the drain field is generally a sign that the system is working well, as the nutrient-rich effluent can promote plant growth. Clear water pooling in the yard can indicate issues, but in many cases, it is a symptom that results from a failing system rather than an indication of total failure alone. Efficient drainage points to a functioning system, as it means that water is flowing as intended through the septic system without obstruction. Therefore, the presence of unpleasant odors stands out as a more direct and clear sign of potential failure and requires prompt investigation and remediation.