I'm active on several railfan message boards, and over the last several months there has been a lot of controversy over the Union Pacific Railroad Steam Program's decision to change their water treatment system 3-4 years ago, a change which some say was responsible for the buildup of scale and sludge in the boiler of one of their locomotives, which resulted in a costly and time consuming rebuild. That got me to thinking. Did the water boiler feedwater on Titanic need to be treated in order to prevent similar issues? Obviously, Titanic is not a steam locomotive, and did not vent exhaust steam to atmosphere. I'm sure there were unique concerns associated with the reuse of the water from the condensors. If the water was not treated chemically, then how was the buildup of scale and/or sludge prevented or managed?