Building A Deck Over A Drain Field

With structures such as decks.

Building a deck over a drain field.

If you have a septic system and want to add a deck to your house or build a shed in your backyard you should consider the consequences carefully. Because of the moisture levels and the need for free air movement no permanent structures. Usually decks are allowed over drainfields as long as the piers of the deck are at least two feet from the drainfield trenches and as long as the deck footings do not support a roof. Can you build a deck over a septic field.

The biggest issue that can arise from construction near a drain field is the damage caused by heavy construction equipment. Building a permanent structure over the tank or drain field is usually a bad idea. Building a deck over a septic tank it is usually not a good idea to build a deck near or on top of a septic tank. However if a permanent structure is built over a drainfield it can restrict the oxygen flow into the soil and restrict the evapotranspiration process.

You may run into expensive problems a few years down the road. Most zoning ordinances will require that you maintain at least a 5 setback from an underground septic system. Building over field lines. If constructing over field lines it is imperative that no foundation is dug.

Here are three things to know in advance. A big risk to building over the drainfield is causing the lines to collapse. The lack of regular pumping of your tank will be a costly mistake which can also affect you again when you sell.