This is an interesting comment, in that, if you "sterilise" with a solution, and then rinse it out, the point of sterilising is lost. Whilst I agree with the principle as regards the water tank, when home brewing, if I use a sterilising solution.......if, I never rinse it out, as that defeats the purpose. (sorry to repeat myself):p
BTW, FWIW, I have a galvanised tank in my vehicle and a plastic tank in the camper trailer and have never had an issue with taste from either.

