Hi all. I have had very good luck solving problems with this site so I hope you can help with this one. I have a submersable water well pump and a new bladder type storage tank. I used to only stay at this cabin on weekends and worried about a water line letting loose while I was away, I always cut the power to the pump when I left. When I would come back I would turn on the power so I would have water. When I would open a faucet I would get water and occasionally a sputter of air. After the air popps some dirt or black crap would come out and some seconds later the water would run clear. I assume the air pops loosened dirt in the water system then it would rinse out. I also thought the air was getting in from me shutting off the system through the week. I trust the pipes now so I decided to leave the power to the pump on all the time. I felt the air would pop out of the faucets and be gone since I don't shut off the pump. Well it has been a month now and I still get air. Any guesses how this may happen? Is there any danger to it? Thank you in advance for any thoughts!!

I live in an old house that has two 14 ft deep cisterns (aprox 6 feet diameter). I've been letting rain water into one of them for several years but it never fills more than 3 feet, so I'd guess there is a crack in the wall. I need to go down into the cistern make repairs but I'm worried there might not be breathable air at the bottom. The cistern(s) are in the ground, their tops at ground level, their bottoms probably lower than the basement floor. They are both adjacent to one side of the house. Is this fear justified? Can someone comment on this and suggest solutions. Thanks, John