My mom lives in a late 70's model modular home. She is experiencing rust in her water. I believe the pipes are galvanized. She is on city water, but they only fix problems at the street.
First, is this dangerous? She doesn't drink or cook with it anymore, but does shower, wash dishes with it.
Second, what needs to be done?
Thirdly, will it damage her new water heater and washer?
How do you know what lines to replace? They are under a concrete drive and walkway!