The Fundamental Filter Stone works the same way traditional water filters work, just without wasteful plastic casings.
Use for 1-3 months depending on your (water) drinking habits, and then send it back to us for proper disposal. For every X you send back, we send you a bonus puck on your next order!
Fundamental Filter Stone
Learn more about our stone, how to purchase, and delivery options.
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We use a coconut shell and charcoal formula (so do the leading water purification companies).
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You can purchase single replacements, but we recommend purchasing in bulk for six months or a year. This is the most sustainable option, considering shipping and delivery impact. (It’s also the most cost effective for us & you).
New York locals can also arrange to pick-up their replacement stones at our stockists.
