I have an old (30 yr?) bladderless pressure tank on a shared (4 houses) well. It appears that over the last six months, air has been entering the tank somehow and ending up in the house water lines. I've been bleeding air out of the tank about once every week to ten days and that corrects the problem temporarily. My question is: is there any way (such as a particular pump failure mode) that would allow this to be happening, or is the only thing that could be wrong is that we are pumping the well faster than it can recover? (There's no obvious reason to think the water table has dropped in the last year.)
When I lived in New Hampshire (The Granite State), there was a process called "hydro-fracting" which involved dropping dry ice down the well shock cooling the bedrock and opening up the fissures to allow faster well recovery. I now live in Northern British Columbia (on probably clay and gravel), so my second question is: if we are overpumping the well, what can be done about it?
Thanks a lot for any information.
Denny