The City of Royal Oak’s Water Department is continuing the inspection of residential lawn sprinkling systems throughout the city for the purpose of protecting the drinking water that is delivered to each customer. This is accomplished by assuring proper backflow devices are in place and in proper working order to prevent contaminants from back flowing into the water system. This is required by the Cross Connection Rules of the Michigan Department of Environmental Quality (MDEQ). As a result, residential lawn sprinkling system backflow devices will be required to be tested and certified by a State certified tester. The new Cross Connection Rules Manual Fourth Edition of October 2008 has changed the test from at least once every five years to at least once every three years. Should you have any questions regarding this matter, please contact the City’s contractor, HydroCorp, Ryan Hensley at 248-250-5000.