An unsual but fun diagnosis. I'm installing 7 more zones onto an exisiting 5 zone system. The flow was Horrible to the original system and I was very concerned with what the issue was.
No Pics but a 1" Meter @63 PSI was only giving me 8 GPM after the BFA. After confirming there was no PRV and the BFA only had 4PSI loss. Also I could hear Severe restriction in water a few feet prior to the meter I called in the WD.
The guy was super skeptic at first that it was the cities side but after a few of his own tests he confirmed as well . He'll have a contractor come out and dig up the city side line up to the main tap and redo it.
It was nice to be able to just BS with the WD guy