Frequently Asked Questions I’ve recently detected an odor in my home, what could be causing that? Probably not the septic system. All fixtures have water “traps”. Traps hold water, which prevents sewer gas from getting into your home from the tank. Odors are difficult to troubleshoot. They sometimes are the result of disconnected pipes, seldom used fixtures (dry water traps), open windows and, occasionally, bird’s nests in the roof vents. Return to FAQ's