Bought a house last Feb. that was built in 1965. The original steel cased well was plugged and a new PVC cased well was put in sometime before we bought the house (at least 10 years prior). They used galvanized drop pipe to the sub pump. We have iron stains on porcelain fixtures in the house, sinks, on the shower heads, and a solid orange coating in the old toilet tanks. When I shocked the well with chlorine a while back I got some pretty cool blood red water for a while.
How do I know if the iron is present in the water or could it actually be caused by the galv. drop pipe? Reading another thread in this forum got me to thinking because they replaced galv. with PVC and corrected an iron/rust problem. I could test the water but it runs through the pipe. It doesn't seem to me like that is enough time to pick up enough iron but I don't know.
I would guess the well is 100' or slightly deeper based on surrounding wells.