The Crystal Quest Nitrate Countertop Water Filtration System is a point-of-use drinking water filter designed to sit on the countertop and connect to a compatible kitchen faucet. It is available in single, double, and triple configurations, with housing options in white polypropylene or stainless steel. The system uses a nitrate-selective cartridge designed to reduce nitrates from drinking water, with SMART and carbon block cartridge stages included on select configurations. A diverter valve lets users switch between filtered and unfiltered water at the sink. With a listed 0.5 GPM maximum flow rate, this countertop nitrate water filter is intended for drinking water use in homes, apartments, offices, and other point-of-use applications.
This Crystal Quest system is designed for point-of-use filtration at the kitchen faucet rather than whole-house treatment. It provides nitrate-focused filtration on demand from the countertop, making it a practical fit for kitchens, apartments, offices, and spaces where under-sink installation is not preferred.
The nitrate cartridge uses nitrate-selective media and is listed for 90% to 95% nitrate reduction, with breakthrough not affected by sulfate levels. The cartridge requires manual salinity regeneration to maintain performance, with regeneration timing varying based on influent nitrate levels.
The nitrate removal cartridge is included in the single, double, and triple configurations. The double configuration adds a SMART cartridge, while the triple configuration adds both SMART and carbon block filtration stages for additional treatment support.
Buyers can choose white polypropylene housing or stainless steel housing. The stainless steel option gives the system a more appliance-style countertop appearance.
This countertop nitrate water filter is designed for everyday drinking water use without a whole-house installation. It is a practical choice for homes, apartments, offices, and renters who want faucet-connected nitrate reduction at the sink.
Choose the configuration and housing material that fit your counter space and filtration goals. Single, double, and triple layouts give buyers flexibility, while white polypropylene and stainless steel options support different style and durability preferences.
Need help choosing the right nitrate countertop filter?
TrueStead Supply can help you compare housing material, cartridge configuration, and nitrate filtration needs.
✓ Nitrate-selective cartridge
✓ Single, double, and triple configurations
✓ White polypropylene or stainless steel housing
| Brand | Crystal Quest |
| Product Type | Nitrate countertop water filtration system |
| Installation Type | Countertop, faucet-connected |
| Configuration Options | Single, double, or triple cartridge |
| Cartridge Mapping | Single: nitrate cartridge; Double: nitrate + SMART; Triple: nitrate + SMART + carbon block |
| Housing Material Options | White polypropylene or stainless steel |
| Polypropylene Housing | White polypropylene |
| Nitrate Reduction | 90% to 95%, based on listed source conditions |
| Nitrate Cartridge Capacity | 5500 ppm nitrates as CaCO3 per countertop product source; gallons vary by influent nitrate level |
| Regeneration Requirement | Nitrate cartridge can be regenerated using sodium chloride brine; regeneration is needed to maintain performance |
| Regeneration Timing | Crystal Quest nitrate cartridge guidance notes regeneration may be needed every 20–30 days depending on influent nitrate level |
| Water Testing Guidance | Nitrate treatment should be selected and maintained based on water test results and influent nitrate level. |
| Max Flow Rate | 0.5 GPM |
| Operating Pressure | 20-60 psi |
| Operating Temperature | 40°F-90°F |
| Polypropylene Single Dimensions | 5" L × 13" H × 5" W |
| Polypropylene Double Dimensions | 10" L × 13" H × 5" W |
| Polypropylene Triple Dimensions | 15" L × 13" H × 5" W |
| Stainless Steel Single Dimensions | 5.5" L × 13.5" H × 5" W |
| Stainless Steel Double Dimensions | 9" L × 13.5" H × 5" W |
| Stainless Steel Triple Dimensions | 14.5" L × 13.5" H × 5" W |
| Optional Add-On | Washable pre-filtration filter for countertop models |
