My university accomodation has no filtered water (i.e. with fluoride removed)... Since it is their property I can't get a plumber to play around with the pipes and install a filter. So is there something - like a cap - that I can wrap around the tap head, to trap the added chemicals? How big would this cap be? (I will be sharing the water source with others and I don't want a big chunk contraption hovering over the sink)
Any other tips appreciated


