All septic tanks and sewage systems are vented to the atmosphere, this is a necessity and required by code. The plumbing vents going through the roof of your home can sometimes cause unpleasant odors. Some say you need to pump the tank when you start smelling your sewer gases. However even new systems can give off sewer gases. In some cases extending your vent pipes can help. Installing a 90 degree elbow at the top of the vent stack facing the opposite direction from the smelly side of the house will put a positive pressure on the vent but still allow it to function. We have used Studor style vents on top of the roof vents with success. These Studor vents allow air into the vent pipes but not out. The only problem is that in the winter when the ground is frozen and cannot ‘breathe’ the sewer flow slows and the Studor vents need to be removed. Given that they may need to be removed we never glue any of these fittings on top of the roof stacks. — David Nequette
Septic Tank Odors, What Can Be Done?
Posted in Septic Tank Odors