What is a standard feature of the outlet baffle in a septic system?

The correct answer, which indicates that the outlet baffle should be tightly affixed to the tank, emphasizes the important role of the baffle in maintaining the integrity and functionality of the septic system. A properly secured outlet baffle is essential because it helps to prevent the mixing of treated effluent with sludge and scum within the tank. By ensuring that the baffle is tightly affixed, it minimizes the potential for leaks or breaches, which could lead to contamination of groundwater or other environmental hazards.

In addition, a well-secured baffle facilitates the proper flow of effluent from the septic tank into the drain field, allowing for proper treatment and disposal of waste. This careful design is vital for the system's efficiency and longevity, preventing blockages and ensuring that the septic system operates as intended.