Kohler Clarity Water Filter
The Kohler Clarity is a tabletop household filter with a silver-impregnated ceramic filter cartridge.
The Kohler Clarity is a household tabletop water filter with a silver-impregnated ceramic filter cartridge. It holds 11 liters of unfiltered water and 12 liters of filtered water with 99% removal of bacteria and protozoa.
Goal 6: Clean water and sanitation
The Kohler Clarity is manufactured in Arkansas, USA and made out of durable food-safe plastic. The Clarity filter cartridge is made out of silver-impregnated ceramic. Pallets ship with extra spigots and filter cartridges.
Description of the type of ceramic filter (pot, candle, or disk)
What primary material is used (ceramic, mud, clay etc.)?
Additional materials added to improve disinfection
Manufacturer-specified flow rate (L/hr)
Laboratory-evaluated log scale removal rate of bacteria
Laboratory-evaluated log scale removal rate of viruses
Laboratory-evaluated log scale removal rate of protozoa
Reduction levels of heavy metals and/or arsenic through this treatment system
Manufacturer-specified maximum level of inlet turbidity (NTU)
Range or value of outlet turbidity levels (NTU)
How often/when should maintenance be performed?
What is the total number of liters that is recommended can be filtered?
Is there safe water storage integrated into this product?
The Kohler Clarity is designed to filter microbiologically contaminated drinking water through a replaceable ceramic filter for a family of four, producing up to 40 liters of water per day with 12 liters of safe storage. On their webpage, the manufacturer claims that the filter reduces bacteria, protozoa, and cysts by 2 logs, however, testing at Tufts University determined a >5.2 log reduction of E. coli through the filters. This product does not treat chemical contamination.
Weight: 2.8 kilograms
Source: Kohler Clarity Fact Sheet
The filter has the capacity to treat 5,000 liters before it needs replacing. There is no end-of-life indicator so users are recommended to check the filter cartridge periodically for cracks, and to regularly clean it with sandpaper when flow is reduced. When cleaning with sandpaper does not restore flow due to irreversible fouling or there are cracks present in the cartridge, the filter cartridge needs to be replaced.
The Kohler Clarity is designed to meet WHO (World Health Organization) water quality standards for microbiological contamination, filter up to 40 liters per day at a rate of 2 liters per hour, have a 23 liters total water capacity (11 L dirty, 12 L clean with safe storage), and be easy to assemble and clean. It is also nestable for shipping as individual filters or in bulk.
No known safety risks if used properly.
A pre-filter is required for the treatment of turbid water.
Biological testing by Tufts University in 2015
Meets World Health Organization drinking water quality guidelines for treatment of biological pathogens, bacteria, protozoa, and cysts.
Laboratory testing for reduction of E. coli through the filter
Can replace the Kohler Clarity filter cartridge with cartridges from other C1 Common Interface products, including cartridges from Imerys (India) and PureEasy (China)
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