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How Do Drywells Work? Suffolk County, Long Island, NY

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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