Septic Sytem Maintenance - System Vents

Why do I need a vent?

Venting of the building plumbing is required to prevent a build-up of dangerous (sometimes explosive) gases within the building plumbing. Venting of a septic system is required to remove noxious gases from the septic system components and provide for longer system life.  Roof vents commonly provide venting for both the plumbing and the septic system. During septic system inspection, poor venting is often quite noticeable at the septic tank outlet and D-box.  Gases (e.g. hydrogen sulfide) combine with moisture to create acids that degrade the concrete.  Poor ventilation can result in rapid deterioration of the D-box.   See Septic Inspection, for examples.

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Yard Vents

LF-Vent1.jpgLeach field venting is required to remove noxious gases and allow for higher-rate digestion of pollutants.  Inadequate ventilation can result in decreased digestion of pollutants and plugging of the leach field.  For small systems, ventilation is normally provided by a roof vent pulling gases from the system with fresh air entering through the soils over the leach field.  For large systems and systems with restricted ventilation, like leach fields placed under pavement or deep soils, additional ventilation measures are required.

Many people do not like having a yard vent.  The typical "candy-cane" vent has an industrial look and often detracts from the landscape. Despite this, you should maintain the yard vent to increase the life of your septic system.  There are various commercial and creative remedies to the visual aspect of a septic system yard vent.  While we are not promoting any particular yard vent style, some pictures are provided to demonstrate some of the options for disguising a septic system yard vent. Vent Disguises & Camouflage.

If you would like to donate additional photos of unique yard vents, please contact us.  We will consider displaying your photo if unique and appropriate.