Reduced Pressure Zone

Safe drinking water is federally mandated and regulated by the Environmental Protection Agency (EPA) as well as the 2014 Illinois Plumbing Code (Sec 890.1110). A reduced pressure zone (RPZ) device is designed to prevent the reverse flow of polluted water from entering the “potable” (drinking) water system.

All potential or existing cross connections in commercial and residential properties must be protected by the installation of a proper backflow prevention device. Some examples of these include a lawn sprinkler systems, swimming pools, hot tubs, outside faucets, and boilers.

Currently, the Building and Safety Division has been proactive and created a record of all backflow prevention devices in the Village in order to ensure compliance with plumbing codes.

Acquire an RPZ Permit


To install an RPZ, here are the steps in acquiring a permit:
  1. The homeowner must obtain a permit from the Village before installation begins. Fill out a Building Permit Application (PDF) as well as a Plumbing Supplement Form (PDF). Please submit both documents to the Building and Safety Division.
  2. The work must be done by a licensed professional of the homeowner’s choosing. Additionally, all contractors must be licensed with the Village. To receive a Village license, contractors must fill out a Contractor License Application Form (PDF) and pay a fee to the Building & Safety Division.
  3. Once you have received a permit, your plumber may begin installation of the RPZ. Once the RPZ has been successfully installed, you must contact the Building & Safety Division and schedule a final inspection.
For a list of Backflow/RPZ Installers licensed with the Village, please contact the Community Development Department at 847-671-8555.

RPZ News from the Community Development Department


Property Owners and Managers


The Village of Schiller Park requires the installation and annual testing of RPZ/Backflow devices on water services. The Village has negotiated a testing fee of $60 from the listed contractors below, which is half the normal service fee. This list of contractors is only a recommendation and you may choose another RPZ/Backflow certified contractor of your choice. However, if do use any of the listed contractors below, please mention this letter in order to receive service at the discounted fee. A copy of test results will be given to the Village.

Village-Certified Contractors


The following is a list of Village certified RPZ/Backflow contractors:
Midcity Plumbing
321 S County Line Road
Schiller Park, IL 60176
Phone: 630-860-1501

Provancal Bros.
14404 S Western Avenue
Schiller Park, IL 60176
Phone: 708-389-3710

If you have any further questions, please contact the Building and Safety Division of the Community Development Department.