With easy installation, space-saving designs and smart features available, Culligan under sink water filters for your home provide the ultimate drinking water upgrade.

In reverse osmosis water filtration, water flows across a tightly woven membrane that separates the water from contaminants as small as a single atom. Typically, the reverse osmosis process is combined with multiple other stages of filtration including a sediment filter, carbon filtration, and additional speciality filtration stages.

Grundfos® UPS 26-99 BFC Circulating Pump With Integral Check Valve, 33 gpm, Flanged, 29 ft Head, 1/6 hp, 115 volt, 60 Hz, 1 Phase, 145 psi

You can get a virtually unlimited supply of cleaner, safer, better-tasting water right from the tap. With multiple stages of filtration, these systems are one of the most comprehensive ways to treat your water for a wide variety of potential problems.

Reverse osmosis water filtration systems can target many contaminants, including arsenic, chlorine, lead, and PFAS. Some of these require specific filters to be included within the system, so make sure to find a system that can address the problems you’re most concerned about. Your Culligan water expert can help you understand the best solution for your home during your free consultation.

Grundfos UPS26 Circulator Pump With 52722513 Check Valve, 33 gpm, 3/4 Inch, 1-1/4 Inch, 1-1/2 Inch, 1 Inch, Flanged, 29 ft Head, 1/6 hp, 1.8 amp

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Colton PCSST-12-1/2 Braided Flexible Pump Connector, 1/2 Inch, MNPT, 12 Inch L, 950 psi at 250 deg F, Stainless Steel Hose, Carbon Steel Thread

Reverse osmosis filters contaminants from water by forcing them through a semipermeable membrane. Some of these contaminants include lead, mercury and chromium, among many others.

Colton PCSST-12-3/4 Braided Flexible Pump Connector, 3/4 Inch, MNPT, 12 Inch L, 550 psi at 250 deg F, Stainless Steel Hose, Carbon Steel Thread

Grundfos UPS26 Circulator Pump With 52722512 Check Valve, 33 gpm, 3/4 Inch, 1-1/4 Inch, 1-1/2 Inch, 1 Inch, Flanged, 29 ft Head, 1/6 hp, 1.8 amp

Colton PCSST-12-2 Braided Flexible Pump Connector, 2 Inch, MNPT, 12 Inch L, 370 psi at 250 deg F, Stainless Steel Hose, Carbon Steel Thread

Grundfos UPS15 Circulator Pump, 17.2 gpm, 3/4 Inch, 1-1/4 Inch, 1-1/2 Inch, 1 Inch, Flanged, 19.4 ft Head, 1/25 hp, 115 volt, 60 Hz

The lifespan of your filter depends on a number of factors including how much water you use, your local water quality and the specific RO system you choose. Regularly replacing your filters will help ensure your system is running at full capacity. Some filters should be changed annually, but others can last up to two years. The reverse osmosis membrane should be checked annually and typically lasts three to five years.

Armstrong 174031-013 S25 Three-Piece Circulator Pump Without Flange, 32 gpm, 3/4 Inch, 1-1/4 Inch, 1-1/2 Inch, 1 Inch, Flanged, 8 ft Head, 1/12 hp

Colton PCSST-12-1 Braided Flexible Pump Connector, 1 Inch, MNPT, 12 Inch L, 530 psi at 250 deg F, Stainless Steel Hose, Carbon Steel Thread

Want to tackle problem water issues that impact cleaning, laundry and bathing, too? Ready to put an end to hard water headaches? See how Culligan whole house filtration systems and water softeners can help address your water concerns.

Under sink water filtration systems are installed underneath your sink to filter your drinking water. They typically offer more in-depth filtration than faucet-mounted water filters. For under sink water filters, you can choose to install a second tap for your filtered water, or, with Culligan’s unique ClearLink PROTM technology, you can switch from filtered to non-filtered tap water with the press of a button.