What is the main role of a flow control device in a septic system?

The primary function of a flow control device in a septic system is to regulate the discharge of water at a specific rate. This regulation is crucial because it helps to ensure the septic system operates within its design parameters, preventing overloading of the system and maintaining efficient treatment of wastewater.

By controlling the flow rate, the device contributes to the proper functioning of the septic system, allowing it to effectively treat wastewater over time. An appropriate flow rate ensures that the soil absorption system has adequate time to process and filter the effluent before additional wastewater is introduced. This helps maintain the integrity of the system, reduces the risk of backups, and minimizes the environmental impact by preventing untreated wastewater from entering groundwater or surface water.

The other options, while related to septic system operation, do not accurately define the main role of a flow control device. For example, blocking sewage from entering the system or storing excess effluent does not reflect the primary function of the device. Similarly, chemically treating wastewater goes beyond the intended mechanical regulation role attributed to flow control devices.