RPZ Backflow Prevention & Annual Inspections

Yearly Inspections

In order for the Village to comply with Environmental Protection Agency (EPA) regulations, the Village of Willowbrook requires any structure, business, or residential with an RPZ device (backflow prevention) to have it inspected yearly by a licensed plumber.

All single-family residences with lawn irrigation sprinkler systems require the installation of an RPZ device and must have it inspected annually as well. After each annual RPZ inspection a certification form is required to be forwarded to: Village of Willowbrook

Municipal Services Department
835 Midway Drive
Willowbrook, IL 60527
or Fax to: (630) 323-0787

If you have any questions, please contact the Municipal Services Department at (630) 920-2238.