PDP (Private Drain Program) with the City of Chicago Department of Water Management. This is a program developed by the city which allows 4S Plumbing as a certified licensed, bonded, and insured company to perform this service for residents. If you have a broken sewer or unrepairable/uncloggable sewer line which is located on the city side (from the sidewalk to the street), and this is a residential property which is three units or less, you are eligible for the Private Drain Program. 4S Plumbing will coordinate the service and obtain a permit from city hall. A permit will be issued and an inspection date and time will be given and scheduled with 4S Plumbing and the homeowner to meet at the property for the inspection. At the time of the inspection, plumbers will power rod the main sewer line, video-inspect and locate the sewer to show the damaged area to the inspector. The inspector will then mark the spot with spray paint, and the city will come out at a later date to do all the repairs necessary for free.