Without any measurements, dextrous, your advice isn't going to be worth anything.
I suggest you measure the incoming static, with this info you may find that an accumulator will fix all the issues.
It will also render the new water main a waste of money, so lets hope you didn't suggest that to your friends originally.
I would like to be the second person that thinks G Bramwell may be the latest user name of the person AKA Big Burner, Water Systems, Dr Drivel. It's too early to be certain, time will tell. Some of the phrases are similar, I won't bet my hat on it just yet.