Features an on board Chemical - Free Filter, with a five micron silver - impregnated coconut shell carbon block; the filter need to be replaced every 6 months if used without a pre-filtration system, or every 12 months with a pre-filtration system. (altichealthprevention.com)
Choose a reverse osmosis or activated carbon block filter sold at most water stores and Costco. (proactive-healthcare.com)
The high - capacity filters include a sediment filter, two ten - inch carbon block filters, a FILMTEC reverse osmosis membrane from Dow Chemical, and a refining carbon filter before the water enters the holding tank. (geekwrapped.com)