City of Crystal Lake Public Works Department
Andrew Resek, Water Division Superintendent
Office: (815) 356-3614
Fax: (815) 356-3697
Water Division, Cross Connection Program
City ordinance and State regulations are designed to protect public health by preventing the back flow of contaminated water or industrial processes into the public water supply. Residents with lawn sprinkler systems must install a backflow prevention device (RPZ valve) at their homes. Installation of such devices helps protect the public water supply from contaminants or pollutants that could backflow through service connections into the public water supply.
RPZ valves must be installed by a licensed plumber and certified by a plumber with an IEPA Cross-Connection Control Device Inspector License (CCCDI) on an annual basis.
In addition to single-family homes with lawn irrigation systems, many businesses, apartment buildings, offices and other establishments are also required to install backflow prevention devices.
Residents with questions regarding the installation of an RPZ valve at their homes, or people with questions regarding requirements for the businesses should contact David Kaus in the Building Division at (815) 356-3605.