For the record, the municipal code where I am (Albuquerque area) states that "AWWA and USC FCCCHR standards and specifications have been adopted by the City... "
The HOA board did decide to have the work done, but not at my particular urging or anything. The City had some verbage on the matter. Three or four master valves were re-located. I understand it ran around $2,000 to do. Like some of you noted, I am not expecting particular improvement, but we'll see. Records on the backflow preventers at issue here have not been all that careful.