The City of Oak Forest requires inspection and certification of any RPZ/ Backflow Preventer at the time of installation and at least once annually thereafter by a licensed Cross Connection Control Device Inspector (CCCDI). The device is installed for lawn irrigation systems, fire sprinkler systems, and commercial/ industrial occupancies to continually protect water supplies from contamination.
Certifications may be sent to us by using one of the following three methods:
City of Oak Forest
15440 S. Central Avenue
Oak Forest, Illinois 60452