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If you haven’t already, you may be winterizing your lawn sprinkler system soon. Frederick Public Works would like to remind you that residential backflow preventers may be found on lawn irrigation systems, wet fire protection systems, hot water heating (boiler) systems, swimming pool fills, water features, etc. If your backflow preventer is located outdoors, remember to remove it and store it in a warm place for the winter. Insulation and/or heat tape may be insufficient. Allowing it to freeze is a costly mistake. Remember where you stored it, as you will need to give it to your lawn irrigation contractor or plumber next spring to re-install. Plumbing Code requires that your backflow preventer be tested immediately upon re-installation every season. Annual tests must be performed by a certified tester and be submitted to the town’s backflow preventer tracking contractor, Aqua Backflow, for compliance through the online portal of TrackMyBackflow.com. This is part of the Frederick Cross Connection Control Program which is designed to safeguard public health. We ask for your cooperation with our program, its enforcement, and any requests for information that come from Aqua Backflow or Public Works staff. If you have any questions, contact Public Works at 720.382.5800.