To maintain the highest quality water your bottleless water cooler can provide, your filter should be replaced every 6-8 months or 1200 gallons, whichever comes first.
If you want the minerals removed, you may want to consider an iRO reverse-osmosis system. The iRO is our Premium Brand Reverse Osmosis Water Filter System. Made in the USA and like our filter system above, it is NSF certified.