Whole House Water FiltersSKU CQE-WH-01131

Nitrate Whole House Water Filter

$1,598.00

The perfect solution for nitrate-free water for your household; includes pre & post filtration to remove sediment and ensure water purity. Comprehensive Filtration: Specifically designed to purify your drinking water. Configuration Options: Available with added Softener and/or SMART Filter. Casing Choices: Comes in either Fiberglass or Stainless Steel casing. Resin Capacity: Options for 1.5 cubic feet or 2.0 cubic feet. Optional UV Sterilizer: 12 GPM UV Water Sterilizer available. Leak Detector: Optional Smart Valve to prevent property damage. Add-On Oxidation System: Multiple options for additional oxidation systems. Post and Pre-Filtration: Ensures maximum purity by filtering water both before and after the main treatment process. Eco-Friendly: Committed to sustainable practices. BPA Free: Toxin-free products prioritizing your health. ISO Certified: Ensuring product quality and customer satisfaction.

Read more
Configuration, Standalone
Structure, Fiberglass
Cubic Feet of Resin, 1.5
Sulfate Removal Whole House System, fiberglass, with SMART filter and softener: three tanks, brine tank, two housings

What’s included?

Included & installation

Your next filters. Already taken care of.
Save 5% 2-7/8” x 20” Subscription · Every 12 months
Save 5% 2-7/8” x 20” Subscription · Every 12 months

Adds selected spares to this order, charged today. Cancel subscriptions anytime.

  • Shop Pay
  • Apple Pay
  • Google Pay
  • Visa
  • Mastercard
  • American Express

Made in USA

Shipping

Free shipping on residential orders over $150 within the lower 48 US states.

Order by 3:00 PM Eastern on a business day and most filters, cartridges and smaller items leave our facility that same day. Standard residential systems ship within 1 to 2 business days, and whole house, custom and specialty systems typically within 3. So far in 2026, 95% of our orders have shipped within one business day and 99% within five (based on an internal review of our order records).

Once shipped, standard delivery typically arrives in 3 days to the Southeast, Northeast and Southwest, and in 4 days to the Midwest and the West. Need it sooner? UPS 2nd Day Air and Next Day Air are available at checkout for eligible products. Systems that ship by freight can take longer and may need a delivery appointment.

Ships by freight truck. Liftgate, inside delivery or limited-access delivery are billed separately if needed.

30-day returns

Returns are accepted within 30 days of delivery when:

  • The item is new and unused, in its original packaging, with no damaged or missing parts.
  • You ask us for a Return Merchandise Authorization (RMA) number before you send it back.
  • You pay for return shipping. Shipping, handling and restocking fees apply.

Filter cartridges, membranes, reverse osmosis systems, custom or special orders and commercial products cannot be returned.

Guaranteed Performance

If this system does not perform, the guarantee applies when all of these are true:

  • Our team has recommended this system for your water.
  • It is installed as recommended and has been running for 1 to 3 months before the test.
  • An independent third-party lab test, at your expense, confirms the system is not removing the contaminants it was recommended for.
  • Crystal Quest has had a fair, good faith chance to fully assess, troubleshoot and repair the system if needed.
  • The system has not been abused, damaged or neglected.

If the results show a lack of performance, we review the report and the installation and recommend changes, made at your expense. If those attempts do not succeed, the order is eligible for return and refund under our refund policy, with shipping and handling deducted.

Lifetime support

Our team answers questions about products, orders, installation, troubleshooting and replacement parts.

Phone: 770-951-5600 or (800) 934-0051

Email: help@crystalquest.com. We reply within 24 to 36 hours.

Live chat during business hours

Hours: Monday to Friday, 9:00 AM to 5:00 PM Eastern. We observe U.S. federal holidays.

Description

Guaranteed Performance badge with lion shield

Remove Nitrate from Your Drinking Water 

USGS map chart of predicted nitrate in shallow US groundwater, mostly under 1 mg/L with scattered hot spots above 10 mg/L

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.

    Pre-filtration

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

    Post-filtration

    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

    • 12 GPM UV 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.
    • Leak Detector Valve: Used to detect a water leak within a water filter system and shuts down the water supply to prevent flooding.
    • Vacuum Breaker: Recommended to be installed inline ahead of water filter systems as a precaution against the rare occurrence of negative pressure (a vacuum) in the water line which can cause damage to the filter tanks and housings.
    • Metered Valve: The systems come standard with a timer valve which runs the backwashing schedule on a set number of days. (For example, every 7 days). The metered valve will run the backwashing based on a set number of gallons. (For example, 3,000 gallons).
    • Oxidation System: Utilizes ozone for efficient water oxidation, improving water quality.

    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.