The Sewer Division is responsible for the upkeep and improvement of sanitary and storm sewer lines in Wheaton. The Wheaton Sanitary District operates these facilities, which conduct sewer smoke testing and operate the Overhead Sewer Private Property Protection Program, the Sanitary Sewer Service Line Reimbursement Program and the Building Sewer Inspection Program. The Sewer Division also informs Wheaton residents about retention/detection basins that may be on and/or near their property. After a heavy rainfall, basins may take 24 to 48 hours to drain. Residents are encouraged to wait 24 hours to contact the Sewer Division during and after heavy rainfall.