In other news.. my wife just yelled at me for putting the seat down..
You mean for NOT putting the seat down
Go to a local independent.
Ask neighbors or yellow pages.
A good system from generic parts should be about half that quote. About $1500.
A whole house RO system is useless for getting the iron out.
So are attaching magnets to your pipes.
Below is a good forum for your problem.
http://ths.gardenweb.com/forums/plumbing/
Form a class action law suit and sue the City for destroying all the homes Plumbing.....
then they will spend Ten Million dollars and soften the entire city supply....
Problem Fixed.