Cost and effectiveness of removing contaminants vary between filter types – Activated Carbon, and Reverse Osmosis water filters.
Active Carbon + Sediment filter + UV. Products vary from pitchers to other forms. They reduce - Bacteria, VOCs, Giardia Cyst, Crypto Sporidium, Dyes, Some PFA's, Taste and Odor, Lead, Mercury. Cannot remove contaminants such as - viruses, bacteria, and heavy metals. Lowest cost
Reverse Osmosis. Table top and under the sink. They remove All contaminants removed by Activated Carbon plus - Arsenic, Lead, Chromium, Endocrine disruptors, Nitrates, Pesticides, Herbicides, Heavy Metal ions, Radioactive ions, Micro-plastics, PFAs. Higher cost.