The Crystal Quest Fluoride Under Sink Water Filtration System is a point-of-use drinking water filter designed to install beneath a sink and connect to the included faucet and installation hardware. It is available in single, double, and triple configurations, with the installation valve selected based on the home’s under-sink plumbing. The fluoride cartridge is included in every configuration, while SMART and carbon block stages are added depending on the selected model. The fluoride cartridge uses media that Crystal Quest describes as having high affinity for fluoride, lead, and arsenic, with performance depending on source-water conditions. With a 1/4" connection size and a listed fluoride cartridge capacity averaging 1,000–1,500 gallons depending on source-water conditions, this under-sink fluoride water filter is intended for point-of-use drinking water applications in homes, apartments, offices, and similar settings where fluoride reduction is a treatment goal.
This Crystal Quest system installs beneath the sink to keep the filter housing off the countertop. It is designed for point-of-use drinking water applications where fluoride reduction is a treatment goal based on source-water conditions and the included faucet setup is preferred.
The fluoride removal cartridge is the core stage of this system. Crystal Quest lists the media as a fluoride removal cartridge containing Calcium Charcoal Granulated Activated Carbon unless Aluminum Oxide is requested, with performance depending on water chemistry, fluoride level, selected media, and use conditions.
The single configuration includes the fluoride filter only. The double configuration includes the fluoride filter and SMART filter, while the triple configuration includes fluoride, SMART, and carbon block filtration stages.
Select the installation valve based on the home’s under-sink plumbing and the installation manual. Verify whether a saddle valve or T-valve is required for the selected connection setup. A leak detector or flood-prevention valve may be considered as a recommended add-on for added installation protection where appropriate.
This under-sink fluoride water filter is designed for kitchens and point-of-use drinking water setups where under-sink placement is preferred. It connects below the sink and supplies filtered water through the included faucet setup.
Choose the configuration and valve option that match your available installation space, plumbing, and water concerns. Single, double, and triple layouts support different cartridge combinations, while valve selection should be verified against the selected under-sink connection setup.
Need help choosing the right fluoride under-sink filter?
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✔ Fluoride cartridge in every configuration ✔ Single, double, and triple options ✔ T-valve and saddle-valve connection choices
Contact Us for a Quote| Brand | Crystal Quest |
| Product Type | Fluoride under sink water filtration system |
| Installation Type | Under sink, included faucet setup |
| Configuration Options | Single, double, or triple |
| Cartridge Mapping | Single: fluoride filter; Double: fluoride + SMART; Triple: fluoride + SMART + carbon block |
| Connection Size | 1/4" |
| Primary Cartridge Type | Fluoride removal cartridge |
| Fluoride Cartridge Capacity | Listed as 4500 ppm fluoride; average 1,000–1,500 gallons depending on source-water conditions |
| Operating Pressure | 20–60 psi |
| Operating Temperature | 40°F–90°F |
| Single Dimensions | 5" L × 14" H × 5" W |
| Double Dimensions | 10" L × 14" H × 5" W |
| Triple Dimensions | 15" L × 14" H × 5" W |
| Installation Valve Guidance | Select the installation valve based on under-sink plumbing; verify saddle valve or T-valve requirements against the installation manual and selected connection kit |
| Recommended Add-On | Leak detector / flood-prevention valve may be considered where appropriate |
| Water Testing Note | Fluoride cartridge performance and service life depend on source-water chemistry, fluoride level, usage, and selected media; water testing is recommended before sizing or replacement planning |
| Installation Note | Follow the installation manual for faucet, valve, connection, and pressure-related setup requirements |
