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Add SMART Filter / Fiberglass / 1.5 Nitrate Whole House Water Filter - Whole House Water Filters - Crystal Quest

Nitrate Whole House Water Filter

7 reviews |

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Remove Nitrate from Your Drinking Water 

Nitrate (NO3) comes into water supplies through the nitrogen cycle rather than via dissolved minerals. It is one of the major ions in natural waters. Most nitrate that occurs in drinking water is the result of contamination of groundwater supplies by septic systems, feedlots, and agricultural fertilizers. Natural bacteria in the soil can convert nitrogen into nitrate. Rain or irrigation water can carry nitrate down through the soil into groundwater. Your drinking water may contain nitrate if your well draws from this groundwater. The regeneration process should be done every 20 to 30 days depending on level of nitrate. Nitrate is reduced to nitrite in the body. Nitrate in drinking water supplies may reduce the oxygen-carrying capacity of the blood (cyanosis) if ingested in sufficient amounts by infants under 6 months of age. This could cause a disease called methemoglobinemia, or “blue baby” syndrome. The EPA has established a maximum contaminant level (MCL) for nitrate at 10 mg/1 (PPM), measured as N. Unlike coliform or other types of bacteria, boiling the water will actually INCREASE the amount of nitrate remaining in the water, increasing the danger to infants.


    Water flows through a 20” sediment cartridge that removes sediment, silt, sand, and dirt.


    Water flows through a 20" solid carbon cartridge for removing volatile organic carbon compounds (VOC's), & any remaining insecticides, pesticides and industrial solvents.

    Nitrate Removal Water Filter

    Water flows through a Nitrate reducing mineral tank and brine water conditioner. In addition, we add our media, ERA® 6500 & 9500 to prevent bacteria growth.

    SMART Water Filter (optional)

    Water flows through our SMART Multimedia, which includes 2 types of coconut shell Granulated Activated Carbons (Standard & Catalytic GAC) infused with our Eagle Redox Alloys®  6500 & 9500, and ion exchange resin to reduce contaminants such as heavy metals, i.e. lead & mercury, chlorine, chloramine, & inorganic products such as herbicides, pesticides, petroleum/pharmaceutical by-products and Ceramic and Tourmaline balls to enhance the water and maintain a more alkaline pH. 

    Water Softener (optional)

    Water flows through an ion exchange resin and brine water conditioner.

    Media may increase hardness in the water which is why a water softener is recommended. Water is hard when it contains minerals like calcium and magnesium. You may see staining on your sinks, tubs, showers, and clothing. You may also notice less lather from your shampoos and soaps and even a feeling of film on your skin. All these are symptoms of the need for softened water. Hard water also causes a higher risk of limescale deposits in household water systems. The negative effect of limescale buildup is that pipes are blocked and the efficiency of hot boilers and tanks is reduced. This increases the cost of domestic water heating by about fifteen to twenty percent. Another negative effect of limescale is that it has damaging effects on household machinery, such as laundry machines. Water softening means expanding the lifespan of household machines, and the lifespan of pipelines. It also contributes to the improved working and longer lifespan of solar heating systems, air conditioning units and many other water-based applications.

    Additional Product Options

    • Leak Detector Valve: Used to detect a water leak within a water filter system and shuts down the water supply to prevent flooding.
    • 12 GPM UltraViolet Water Sterilizer: Specifically designed to meet the demanding microorganism control concern. These microorganisms can range from bacteria and viruses to algae and protozoa. A major advantage of UV treatment is that it is capable of disinfecting water faster than chlorine without cumbersome retention tanks and harmful chemicals to your drinking water.

    Important to Know

    Pinholes or rust may occur on stainless steel tanks in environments with high humidity, when salt is present or if condensation remains on tank without being routinely wiped down. If your system will be exposed to one of these factors or you are unable to perform the needed maintenance, we recommend a fiberglass tank.


    Filter Media Volume 1.5 cubic feet 2.0 cubic feet
    Capacity (gallons) 750,000 1,000,000
    Service Flow (GPM) 9-11 10-13
    Tank Dimensions 10" x 54" 12" x 52"
    Material Stainless Steel or Fiberglass Stainless Steel or Fiberglass
    Backwash Automatic Automatic
    Brine Tank Dimensions* 18" x 33" 18" x 33"
    Grain Capacity* 48,000 60,000

    *When you have a softener selected

    Replacement Media

    Product Name SKU
    Nitrate Removal Media CQE-RM-05007
    SMART Multimedia CQE-RM-05017
    Eaglesorb Water Softeners CQE-RM-05002

    Replacement Cartridges

    Product Name SKU
    Sediment Cartridge (2-7/8"x20") CQE-RC-04015
    Carbon Block Filter Cartridge (2-7/8"x20") CQE-RC-04014

    Customer Reviews
    4.9 Based on 7 Reviews
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    Stacy B.
    United States United States

    Great product instructions could be improved

    Purchased this product due to high level of iron in our system. The purchase was easy and delivery was fast (even over a holiday weekend). The team also gave us the discount for a sale that started the day after we ordered our product when we asked. Installation was the only challenging part. The instructions are only provided online (none came with the product) and they are not very detailed. We had to do some additional research to ensure we were going to install they system correctly. Have to do a final water test to ensure the product has improved our water as planned, but we can already see an improvement in the water before the water test.

    United States United States

    finally working well

    First "plumber" installation was an expensive nightmare, done incorrectly. Once it was done correctly by another company, it has worked well, and dropped arsenic from 86ppb to 3ppb.

    Michael R.
    United States United States

    Great Whole Home Filter System

    I have had the system in full operation for 4 days now and am really enjoying it. I originally ordered everything the 7th of February and was told to expect 10-14 days for arrival. It arrived in less that 5 days and my wife had to move the heavy boxes on her own :-(. When I got home from my trip, I opened everything and discovered that the up-flow valve for the tankless softener was missing from the shipment so I had to call and get it sent to me. That meant canceling the plumber install and postponing until the valve arrived. A week later, the plumber was able to come and provide an estimate. Fast forward another week and installation begins but discovered that my water pressure was at 120 psi. System remained in by-pass for another week until the plumber could order and install the pressure reducer and on 11 March, finally in full operation! The first day after install the water tasted a bit funny but now everything is great and we are enjoying the system very much. Thank you Cyrstal Quest for working through the process and getting me all the help and assistance needed.

    Crystal Quest SMART Whole House Water Filter (9-13 GPM) Review

    Customer Service
    M-F 9am - 5pm EST (800) 934-0051 or (770) 951-5600