Many are actually chlorine filters, not cleansers. Several harmful impurities, such as THMs as well as VOCs, which have been linked to cancer cells, will certainly not be obstructed by the economical models. In some, the toxic metal lead is not eliminated. Lead contamination is a huge issue in many cities. Not due to the fact that the therapy center isn't doing their task, yet due to the fact that the pipes that run into the residence are old.