Hi Chris, the filters are NSF certified to reduce 28 contaminants including lead, pesticides and pharmaceuticals. They are not reverse osmosis. They utilize 3 types of filtration, Particle-Filtration, Micro-Filtration and Adsorption-Filtration. Here is the link to the description: https://bit.ly/3ywjmRy We hope this helps!
4 years, 2 months ago
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WhirlpoolTeam