Anyone familiar with water meters ? UPDATE

Mike, I'm in water treatment and have experience/licensed in distribution but still LOTS to learn. I drew a pic. There SHOULD be 3 valves and 2 water lines in play here.
The MAIN typically runs down your street. Your SERVICE line is fed from the main. There should be a valve(Corp stop) between main and service line. Then at the property line there should be another valve(Curb stop) then from curb stop to meter(inside or outside) your house.
Once the service line enters the house there will be a shutoff for the house.
City SHOULD come and shutoff the curb stop. Meter should NOT move. In any case with any one of the 3 valves closed that meter should NOT move.
Hope that makes sense.
Like some have said the older mechanical(impeller) style CANT speed up but can slow down(blockage, sand, mineral build up etc)
Newer ones computer glitches are possible.
My bet is on fibre optic company nicked your service line.
Toilets are VERY prone to leak. What you can do to chk shitter is lay a square of toilet paper on a dry porcelain part of toilet, right where water comes in it when you flush. If its wet after a minute or 2 that MIGHT be the issue.
Good luck, let us know.

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