Yes, reverse osmosis (RO) is an effective water purification method. It works by forcing water through a semi-permeable membrane to filter out pollutants and impurities. This process can remove a variety of substances, including: Dissolved salts and minerals (such as sodium and calcium) Heavy metals (such as lead, arsenic, and mercury) Microorganisms (such as bacteria, viruses, and protozoa) Chemical pollutants (such as pesticides and chlorine) RO membranes have very fine pores, usually about 0.0001 microns, which allow water molecules to pass through while blocking larger pollutants. This makes it one of the most effective filtration methods to improve water quality.