The Doulton W9331208 is a countertop gravity-fed filtration system that uses Doulton's proprietary ceramic filtration technology combined with an activated carbon core. The ceramic shell filters down to a sub-micron level (0.9 microns absolute, 0.2 microns nominal), physically blocking bacteria, cysts, sediment, and turbidity, while the internal carbon block reduces chlorine, chemicals, and bad tastes and odors. It connects directly to your faucet via a diverter, requires no electricity, and delivers clean drinking water on demand.

The Doulton W9331208 reduces 99.99% of bacteria (including E. coli, Cholera, Salmonella, and Shigella), cysts (Cryptosporidium and Giardia), sediment, rust, turbidity, chlorine, volatile organic compounds (VOCs), and chloramines. The Doulton ceramic filter elements used in this system are tested to NSF/ANSI Standards 42 (aesthetic effects) and 53 (health effects) for contaminant reduction, giving you confidence in safe, great-tasting drinking water straight from your countertop.

The Doulton ceramic filter cartridge inside the W9331208 has a rated service life of up to 6 months or approximately 600 gallons under typical household use, whichever comes first. One of the unique benefits of Doulton ceramic technology is that the outer ceramic shell can be cleaned and reused multiple times during its life — simply scrub the outer surface with a soft brush under running water when flow slows down to restore performance.

Installation of the W9331208 requires no plumbing modifications or tools. Simply unscrew the aerator from your standard kitchen faucet, attach the included diverter valve, and connect the flexible tubing from the diverter to the countertop housing. Flush the ceramic candle with 2-3 gallons of water before first use to rinse away any manufacturing fines. When you want filtered water, flip the diverter lever to direct water through the Doulton system. Note: this unit is designed for standard threaded faucets and is not compatible with pull-out sprayer faucets.

You should clean the Doulton ceramic candle whenever you notice a reduction in flow rate — typically every 2-4 weeks depending on your water quality. Remove the candle, scrub the outer ceramic surface gently with a Scotch-Brite pad or soft brush under cold running water (never use soap or detergents), and reinstall. Replace the ceramic filter cartridge entirely after 6 months or 600 gallons, or sooner if the ceramic surface becomes too thin from repeated cleanings. Replacing on schedule ensures continued sub-micron filtration performance and bacterial reduction.