Twin-Housing Undercounter Water Filter – KDF/GAC & Doulton Ceramic
This twin-housing under-sink filter pairs our KDF/GAC cartridge with your choice of one special contaminant filter cartridge. It features the Doulton Sterasyl ceramic as a pre-filter to effectively remove harmful bacteria and cysts, plus sediment down to 0.9 micron. Click here to see performance data. The ceramic cartridge can be cleaned up to 40–45 times (about once a month).
What It Removes
☢️ Chlorine, Lead, PFAS, PFOA, Chemicals & Heavy Metals — via KDF/GAC cartridge
🦠 Harmful bacteria — E. Coli, Fecal coliform, Salmonella, Streptococcus — via Doulton ceramic pre-filter
🪨 Cysts (Cryptosporidium, Giardia) & sediment down to 0.9 micron — via Doulton ceramic pre-filter
✅ Leaves beneficial minerals intact — calcium and magnesium stay in your water
💧 Convenient — quality water right at your tap
How It Works
Stage 1 – KDF/GAC Cartridge: Kinetic Degradation Fluxion (KDF) is a high-purity copper-zinc formulation that uses redox (oxidation/reduction) to remove chlorine, lead, chemicals, VOCs, PFOA, PFAS, and heavy metals. Tested to NSF-53 protocol by an independent laboratory.
Stage 2 – Doulton Sterasyl Ceramic Pre-filter: Removes harmful bacteria, cysts, and sediment down to 0.9 micron. Cleanable up to 40–45 times.
Faucet Options
Standard Series — Chrome finish with black plastic tip and handle. 8.75" tall, 5.5" swivel spout reach. Included at no extra cost.
Premium Series (+$23) — Solid brass with quarter-turn ceramic handle. Available in chrome, brushed nickel, white, almond, bisque, black, and polished brass. 8.75" tall, 5.5" reach.
Euro Series (+$49) — European-design lead-free solid brass faucet with quarter-turn ceramic handle. Available in chrome and brushed satin nickel. 10.75" tall, 6.25" reach. Click here for a close-up picture.
Select your faucet color/finish at the top of this page.
Installation
Quick-connect fittings make installation fast and tool-free. The system mounts out of sight under your sink, connects to the cold water line via an Angle Stop Valve, and dispenses through the included solid brass faucet. A ½" hole is needed for the faucet stud — a cover plate is included to fit larger pre-drilled holes (e.g., vegetable sprayer holes). Installation Instructions
Note: Consumer is responsible for complying with all applicable state and local plumbing codes.
What's Included
Standard faucet (upgrade available)
Angle stop valve connector
High-pressure polyethylene tubing
Mounting bracket and housing wrench
Specifications
Dimensions: 12" tall × 10" wide × 5" deep
NSF tested: NSF-53 protocol
Warranty: 3-year prorated on cartridges; 5-year on components (excluding faucet)
💰 Costs only pennies per gallon — better than bottled water quality