Check the listing for details. Doulton W9331208 HCS Countertop Water Filter System, Tap Fit 10 in UltraCarb. Color: Silver, Condition: New. Listed at 220.00 USD. NSF Certified Filter! Connect to Your Tap Enjoy great-tasting filtered water right from your sink! The Doulton HCS Countertop Water Filter System requires no plumbing and connects directly to your faucet for easy installation. Includes 1 Ultracarb Ceramic Filter - Reduces chlorine, cysts, sediment and heavy metals from your drinking water. NSF Certified for codes 42, 53 and 401.. Easy to Use and Maintain - Connect to the thread of your faucet tap - system sits right next to your sink. For best results, replace the Ultracarb filter element every 6 months (up to 600 gallons of clean drinking water).. Stainless Steel - Gleaming, durable stainless steel unit.. Made in the UK. Doulton has been making water filters since 1826.