How Do Drywells Work? Suffolk County, Long Island, NY
How Do Drywells Work? What’s A Drywell? A drywell is an absorption system burried under ground usually in the shape of a cylender. Drywells cylendars are usually a tall with concrete with holes in the side and an open bottom. (see bottom right side) Drywell Installations & How They Work Drywells are installed by digging a deep hole, usually near the septic tank, and setting the drywell in it. Gravel is usually dumped around the outside of the drywell and a lid put on top. The drywell is then connected to the septic tank with piping and the whole thing is covered with soil. Effluent enters the drywell from the septic tank and then exits out the holes in the side and seeps into the soil that surrounds it. Drywells were also constructed of brick. These were built as upside-down cone shaped structures constructed inside a large hole. Once completed, they were carefully covered up with soil (backfilled). Some have small lids at the top of th