Residential Dry Well

City of Wheaton’s Definition:

Dry Well: An infiltrative practice that requires the excavation of soil to create a void space which is then filled with material, commonly aggregate, for the primary purpose of increasing the infiltration of storm/groundwater. (Requires a Drywell Permit which can be obtained by filling out an Engineering Application for Permit)

French Drain: An infiltrative trench containing a perforated pipe that connects to a City Storm Sewer or is constructed to create flow through the pipe system without the need for infiltration. (Requires an Engineering - Storm Sewer Connection Permit which can be obtained by filling out an Engineering Application for Permit)

Application for an engineering permit for a Dry Well shall submit the following:

Two copies of a site plan. Drawn on a “to scale” plat of survey (e.g.: 1"=10', 1"=20’, or 1”=30”); reduced copies will not be accepted.

  1. All materials used shall be indicated on the site plan. This includes piping and dry well construction.
  2. The residential water service and b-box shall be delineated on the site plan. All dry wells must be 10’ from a water line.
  3. A Dry Well is required to be located at minimum 10’ from a residential structure and 10’ inside all property lines.
  4. The site plan must show a perimeter silt fence and provide a silt fence detail. This must be installed if the project intends to have disturbed earth exposed longer than one (1), workday.

Revised 3/15/2017