Plumbing problems and Concrete questions always seem to bring out all the "experts".

Blueboat, nothing personal but with a well at 30 feet,and water that is staining house fixtures, you need advice from people who actually deal with this stuff.

I deal with Water Quality on a daily basis, and I can tell you most of the info presented here is erroneous, or close to it..

Get the water tested, is the Iron Ferric or ferrous?

With a well as shallow as 30 feet I suspect Tannin's might even be present..

Don't wait until all the fixtures are stained beyond repair, if their not already..