Under the Counter Triple Water Filter system (UC-T) (ID 258)

 
 
This under-sink water filtration system connects directly to the cold water line using an EZ stop-valve connector and dispenses filtered water through a premium long-reach, lead-free solid brass faucet.
Pick two filters in addition to Carbon filter.
Which Cartridges Do You Need? It depends on what you want out of your water. Here are the three most common setups: Option 1 — The All-Around City Water Setup KDF/GAC → Fluoride → Carbon Block Best for most people. Covers chlorine, heavy metals, lead, fluoride, arsenic, radium, uranium, microplastics, pharmaceuticals, and PFAS. If you're on city water and want to cover all your bases without overthinking it, this is your combination.
Option 2 — The PFAS-Focused City Water Setup KDF/GAC → Carbon Block → PFAS Specialist (FS-400) If PFAS and industrial contamination is your main concern, this is the stronger choice. The KDF/GAC clears the path, the carbon block handles microplastics and pharmaceuticals, and the FS-400 goes deep on PFAS/PFOA/PFOS specifically. You're trading fluoride removal for maximum PFAS protection.
Option 3 — Want Both Fluoride AND PFAS covered? KDF/GAC → Bone Char Fluoride → PFAS Specialist (FS-400) You get fluoride, arsenic, heavy metals, AND targeted PFAS removal. The carbon block's microplastic and pharmaceutical coverage steps back, but the KDF/GAC picks up a good amount of that slack upfront.
Option 4 — Well Water Sediment Prefilter → KDF/GAC → NanoCeram Well water is a different animal. You need sediment removed first to protect your other cartridges, then heavy metals and chemicals, then the NanoCeram handles bacteria, viruses, cysts, and nanoplastics. City water fluoride and PFAS cartridges are less relevant here — biology is the priority.