Water Meter Leak Indicator Going Back And Forth

The flow needle was turning slowly forward then backwards stopping then forward then backwards and stopping it just kept doing that.
Water meter leak indicator going back and forth. Today i saw something new. When the pressure drops then the excess pressure in your system flows backwards again to equalize the pressures which makes the dial tick backwards. This would definitely make the meter spin backwards and warrants a call to your local plumber. If the leak indicator or dial hand is still rotating then water is flowing somewhere between the meter and the shut off valve.
Do you have a pressure reducing valve prv. I have seen the flow indicator on older mechanical meters show a back and forth surging so i would say it s normal. Each time it moved forward backwards forward it ended up a little past where it was. That said i ve never seen it happen quite that much.
If the meter is installed backwards the meter will do that. I m not saying it is backwards just that it will act like that if there are pressure changes. I looked at the meter next to it just for comparison it was stopped and steady. If you walk out to your water meter and notice the area around it is wet and soggy or you see standing water and puddles then you have a leak with the water from the main line coming into your home.
When the pressure rises more water is forced into the home. I didn t have any fixtures etc turned on while this was happening. All is well with your system. If it is moving forward clockwise there is water flow.
It could be on the city side and if that is the case then you won t be charged. Backflow can occur due to either back pressure or back siphonage which are essentially too high or too low of pressure in the system. That means there is a leak between your water meter and your side of the shut off valve. Is the only cause of this a leak somewhere.
There are several external signs that you can look for around your water meter to determine if you have a leak. Then when the pressure decreases water flows out. Thursday june 21 2018 most water meters have a leak detection spinner in the shape of a triangle star or arrow that can show low level water flow. You ll often see this when someone on your block turns on their sprinkler system or a fire hydrant is opened.
I recently noticed that the red triangle on the face of my water meter was moving back and forth by about 3 4 of a revolution. On my inspections i always look at the water meter to see if the flow needle is stopped when all the water is off in the home. Backflow is when water flows incorrectly in the wrong direction. So we are now back to the meter face now check if the meter s leak detector hand is moving.
I think it is water pressure fluctuations in the system. When the pressure increases some water goes into your system to equalize the pressure which makes the dial tick forward.