There shall be no physical connection between any public water supply system intended for potable or domestic use and any system, equipment, or device that may serve as a source of contamination, unless protected by a properly maintained backflow preventer approved by the commissioner. Backflow prevention for fire sprinkler systems must comply with American Water Works Association Standard M14, section 6.3, as referenced in part 4715.2110.
MS s 144.383
October 27, 2003
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