When it comes to filtering, the process typically involves passing the liquid through various layers of filtration material - such as activated carbon - so as to remove harmful particles like bacteria and other contaminants in order to make it fit for consumption. On the other hand, purification takes into account more rigorous methods of cleaning water; for instance by using UV rays or reverse osmosis technology which further removes viruses and microorganisms from contaminated water sources with greater efficiency. Additionally, many filters come equipped with additional features like mineralizers which add essential nutrients back into filtered water.