"Al Schmidt" wrote in message
news:QYtQi.4192$I22.4009@trndny03...
I have a copper pipe which just developed a leak. This is in the basement
of the house. I have two wells and this is neat the valve which allows me
to switch wells. I have never had a copper pipe leak, except when damaged.
There is a high iron content in the wells, also sulfur is present, and the
ph is close to balanced. What would cause this pipe, actually a tee fitting
to develop a leak? It is in the fitting wall, not the joint. This is large
~ 1 inch copper.

I've heard of regions with high sulfur content having corrosion in copper
pipes. Could be a defective fitting that took many years to corrode or
erode through. Rare, but it does happen.

While simple enough to replace it, check the tubing going to it to be sure
they are not corroded and ready to let loose with a lot of pin holes.