Apparently, the right thing to do it to place a cannister filter of active carbon on this rinse. According to some deep reading, it will not only remove the remaining chlorines virtually instantly but also 33 other undesirable tap water possibities. Then let the RODI rinse finish it off. You must understand Belgian water bills before asking why I use tap water at all. First, its about 5x the average world price. Then, there is the heavy user charge, where above a certain volume the price augments 40% (water hog prices). Long term, it would be cheaper to install a 3000 liter pumped rain cistern and RO from that.