both water displacement and pressure increase would be nice to know. displacement will show that no water softner water will make it back to the main in the street. Borough is concerned with cross contamination of city water. Pressure will prove that the borough officials did not do there...
gentlemen, small time old town, big time problem. town installed new water meters with check valves in all houses. Houses without expansion tanks are experiencing pipe failures. Exactly how much water is displaced (pushed backwards} in piping without check valves during a normal heating cycle...
