Ditch the pitcher and forget the fridge filter
A Culligan Reverse Osmosis System is customizable, with 12 interchangeable filters. It is certified to reduce up to 60 water contaminants unique to your household.
How a reverse osmosis drinking water filter system works
There are four distinct steps in reverse osmosis water filtration – pre-filtration, reverse osmosis, drainage and storage.
1. Pre-filtration
Water passes through a particle filter and activated carbon filter, reducing impurities like salt, sediment, chlorine, mercury, copper and pesticides.
2. Reverse osmosis
Pressurized water is forced through a semipermeable membrane, trapping the smallest impurities and allowing only water to pass through.
3. Drainage
The removed contaminants are flushed away while treated water moves to a storage tank.
4. Storage
Before the treated water reaches a faucet, it undergoes a final activated-carbon filtration to improve taste and quality for household use.
Multi-stage filtration for better water
- Sediment filter traps rust, sand and other large particles
- Carbon filter tackles bad tastes and odors, like chlorine
- Reverse osmosis system filter reduces contaminants like lead, mercury, chromium and more
- Advanced specialty filters reduce pharmaceuticals, virus, bacteria and more
- Custom filters add minerals back in and increase the water’s PH
- Polishing filter makes water crisp and results in a better taste
A Culligan Whole Home Water Filter System gives you
Cleaner, safer drinking water
Better-tasting food and beverages
Unlimited supply of great-tasting water
Less plastic bottles in landfills
Popular Culligan Reverse Osmosis Drinking Water Systems
Aquasential® Reverse Osmosis Drinking Water System
starting at $39.95/month
- Up to seven stages of filtration with 12 interchangeable filters
- Certified to reduce 60 different contaminants
- Unlimited supply of safer water for just pennies a glass
- Smart & tankless options available
Financing terms defined by third-party vendor if applicable. Dealer participation varies. See dealer for details. Contaminants may not be in your water.
Aqua-Cleer® Reverse Osmosis Drinking Water System
starting at $32.95/month
- 13 advanced filter options solve multiple water problems