If you're looking for a system to provide an abundant supply of high-quality, worry-free water, choose the K5. This state-of-the-art reverse osmosis system is convenient and economical. And, it can tackle your toughest water quality challenges.

QuickFlo® Technology

99% Contaminant Removal

Customizable, Multi-Stage Filtration

EverClean® Rinse


The K5 is our most advanced and effective reverse osmosis system ever. It is recognized for significantly reducing more contaminants than any other drinking water treatment unit. The K5 tackles even the toughest water-quality challenges, while producing more water faster than any comparable system. When you choose the K5, you will not need to ration or wait for your water.

Thanks to the customizable FlexFilters in your K5, you can address the specific water challenges you're facing now or may encounter in the future. Filters are available for viruses/bacteria, arsenic, chloramine, chlorine/sediment and VOC reduction.

Water is dispensed right at your sink from an exclusive, lead-free faucet, which is available in a variety of finishes. The K5 also features QuickFlo® technology to deliver a strong, steady stream of high-quality water when you want it. And, thanks to the EverClean® Rinse, the K5 uses high-quality water to clean itself, keeping the system in top working order and extending the life of the membrane.

Additional features like the MACguard® Filter and PureMometer® Filter Life Indicator let you know when it's time for filter changes and prevent you from using the filters past their capacities. Quick-disconnect filter cartridges are easy for anyone to change. 

The K5 Drinking Water Station is protected by a 10-year limited warranty, including the membrane. 

Customize your K5 with Our Flex Filters


Sediment Prefilter

The Sediment Prefilter cartridge is designed to reduce sediment content during the prefiltration stage. It is commonly used for well water supplies.

High Capacity Carbon/Sediment Prefilter

The High Capacity Carbon/Sediment Prefilter cartridge is designed to reduce sediment and chlorine content during the prefiltration stage. It is most generally used for municipal water supplies or in cases where water is treated with chlorine.

K5 Reverse Osmosis Membrane

The reverse osmosis membrane is the heart of the K5 Drinking Water Station and its design is exclusive to Kinetico. It is not a FlexFilter and does not need to be replaced regularly like FlexFilters.

Taste and Odor Postfilter

The K5 Drinking Water Station’s postfilter reduces tastes, odors and aesthetic chlorine before water is consumed to ensure it tastes great.

Perchlorate Guard

The Perchlorate Guard cartridge significantly reduces perchlorate in water. Perchlorate is a byproduct of certain forms of manufacturing, but it can also occur naturally.

Purefecta® Guard

The Purefecta®​ Guard cartridge generates biopure drinking water by significantly reducing 99.99999% of bacteria and 99.99% of viruses.

VOC Guard

Our VOC Guard significantly reduces volatile organic compounds like pesticides, paints, cleaning supplies and other chemicals that may be in your water.

Mineral Plus

The Mineral Plus is an additive cartridge that lets you add beneficial minerals such as magnesium and calcium to your treated drinking water.

Arsenic Guard

The Arsenic Guard cartridge is specifically designed to reduce arsenic (AS III) in water.

Chloramine Guard

The Chloramine Guard cartridge is designed to significantly reduce chloramine, a chemical compound made of free chlorine and ammonia. Chloramine is used to treat approximately 1/3 of US municipal water sources.