What should be monitored regularly for a septic system?

Monitoring the level of scum, sludge, and the condition of the drain field is essential for the proper functioning of a septic system. Scum refers to the floating layer of fats, oils, and greases that accumulate at the top of a septic tank, while sludge is the solid waste that collects at the bottom. Maintaining appropriate levels of both is crucial, as excessive accumulation can lead to blockages and system failures. If scum becomes too thick, it can escape into the drain field and lead to soil clogging, preventing proper wastewater treatment.

Additionally, the condition of the drain field is vital to ensure that treated effluent is effectively absorbed into the soil. Regular monitoring helps to identify any potential issues early on, which can prevent costly repairs and maintain the system's efficiency. Comparing with the other options, they do not address the critical operational aspects that directly impact the system's health and performance. Monitoring wastewater color, temperature, or noise levels does not provide relevant insights into the functioning and potential issues within the septic system as effectively as observing the levels of scum, sludge, and drain field condition.