Section 485:11 - Backflow Device Requirements a...
Source. 1989, 339:1. 1996, 228:106, eff. July 1, 1996. 2013, 50:1, eff. Aug. 3, 2013. 2014, 304:4, eff. Sept. 30, 2014. 2015, 50:1, eff. Aug. 1, 2015.