A swimming-pool taste or smell in drinking water, mostly on city water.
Your utility's report says which disinfectant it uses; your own taste threshold decides whether it's worth treating.
Chlorine and chloramine respond to different carbon types — this matters when choosing a filter.
A certified countertop or under-sink carbon filter is reversible and renter-friendly.
Whole-house carbon works but maintenance is the real cost — see the five-year view.