3M™ 3MRO401 Under Sink Reverse Osmosis Water Filter System is a multi-stage reverse osmosis water filter system that is NSF listed to reduce particulate, chlorine taste and odor, arsenic, barium, cadmium, chromium (both Hexavalent and Trivalent), copper, parasitic protozoan cysts, fluoride, lead, radium, selenium, p-Dichlorobenzene, TDS and turbidity.

• Advanced multi-stage reverse osmosis water filtration process helps provide cleaner, better tasting drinking water
• Advanced automatic shut-off helps promote peak efficiency and water conservation
• Sanitary Quick Change (SQC) cartridge design helps provide fast and easy cartridge change-out
• Membrane rated daily production rate of up to 18.9 gallons per day (GPD)/71.73 liters per day (LPD)*
• System designed for both chlorinated and non-chlorinated municipal or well water applications

3M™ 3MRO401 Under Sink Reverse Osmosis Water Filter System installs under the kitchen sink and is designed to be a highly effective system for water filtration on demand. Our multi-stage system delivers cleaner, clearer, better tasting water for drinking, coffee, tea, baby formula, cooking and more. Our Sanitary Quick Change (SQC) helps provide fast and easy cartridge change-out.

Our under sink reverse osmosis filtration system is NSF listed. This multi-stage system uses a series of filters and membranes to reduce particulate, chlorine taste and odor, lead, parasitic protozoan cysts, chromium (both Hexavalent and Trivalent), cadmium, copper, radium, TDS, arsenic, p-Dichlorobenzene, and turbidity in municipal or well water. Our 3MRO401 is also effective for reducing sediment. The universal system design is effective for both chlorinated and non-chlorinated systems.

Best Features
2.4 gallon/9.1 liter storage tank
0.6 gpm/2.3 lpm flow rate
¹/₄" push-in connection
40 – 100 psi/276 – 689 kPa pressure range
40 – 100 °F/4.4 – 37.8 °C temperature range

The 3M™ 3MRO401 Under Sink Reverse Osmosis Water Filter System includes everything needed for most installations such as a polished chrome dedicated faucet, quick-connect fittings, an attached mounting bracket and tubing. Also included is a built-in shut-off valve that allows for changing the Sanitary Quick Change filters without shutting off the water supply. The valve helps conserve water by turning off the water when the storage tank is full and turning it back on as needed, to refill the tank.
To maximize system performance and efficiency, regularly scheduled maintenance including replacement of the filter cartridges at the required interval, at the rated capacity, or sooner if a reduction in water flow occurs is required. Filter life is dependent on actual use and incoming water quality.

3M, a household brand name, is a known leader in filtration technology and recognized for innovation, trust and quality around the world and 3M branded water filtration products have been addressing water quality issues for over 50 years. 3M products offer a wide range of solutions designed to address many types of water quality concerns. Third-party certifications, such as NSF and WQA, are a quality advantage we strive to provide on many 3M water quality improvement solutions.

Having clean and clear drinking water in your home is as pleasurable as it is reassuring to know that you're giving your family the best. With a water filtration system from 3M Purification, you can provide filtered drinking water for every member of your family. From whole home water filtration to drinking water systems, look to 3M Purification to help you find the right solution.