Top 9 Nitrate Water Filter – Replacement Under-Sink Water Filters

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1. Express Water

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Express Water RO5DX Reverse Osmosis Filtration NSF Certified 5 Stage RO System with Faucet and Tank – Under Sink Water Plus 4 Filters – 50 GPD, White, 14 x 15 x 5

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Express Water #ad - Customizable ro water filter system: express water home water filtration systems are fully upgradable and customizable with quick connecting fittings. On demand support: support from experts who can answer any of your questions about your new water filter. Express water’s quick and easy-to-understand design means you can install and understand everything about your new water filtration system.

Leak detection: each under sink water filter includes an emergency leak stop detector that shuts off water flow when it detects unwelcomed moisture. Help has arrived - support from experts who can answer any of your questions about your home’s water. Love your water - environmentally friendly coconut carbon filters give unequalled quality and a clear natural taste. Under sink water filter system: no need to mess with refilling or activating your water filter, Express Water’s water filtration systems automatically fill your water tank with high quality drinking water.

Under sink water filter: don’t waste money on professional installation. Water purification system: drink the healthiest water on Earth. All our water filters are specially engineered to work together, producing the safest and best tasting water you’ll ever drink. Reverse osmosis water filter: experience what water should taste like with the Express Water reverse osmosis water filtration system reducing up to 99. 99% of lead, calcium, nitrates, Chlorine, Arsenic, Fluoride, and more.
BrandExpress Water #ad
ManufacturerExpress Water #ad
Height18.06 Inches
Length16.18 Inches
Weight11.8 Pounds
Width18.75 Inches
Part NumberRO5DX
ModelRO5DX

2. Frigidaire

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1 Count, Frigidaire WF2CB PureSource2 Water Filter Cartridge, White

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Frigidaire #ad - Push the release button to remove the old filter. When the display changes from red to green, the status has been reset. Take a sip and relax as you let your filter get to work reducing impurities found in common tap water such as lead, nitrates, pesticides, and mercury for worry free water at home.

Most reminder lights are reset by pressing and holding the water filter button on the dispenser control for 3 seconds. Discard the water or use it to water plants. Designed to remove harmful contaminants giving you peace of mind with every glass. The puresource 2 wf2cb is designed with a carbon-based filter to improve your water by removing the odor and taste of chlorine for smoother drinking, making it easy to keep the whole family hydrated.

Enjoy fresh tasting water right from the fridge and directly in your glass with the PureSource 2 water filter. Run water through the new filter for 3 minutes to prime it. Slide the new filter in until it clicks into place. The wf2cb water filter is easy to install. Your refrigerator’s reminder light does not turn off automatically.
BrandFrigidaire #ad
ManufacturerFrigidaire #ad
Height7 Inches
Length6 Inches
Weight0.9 Pounds
Width3 Inches
Part NumberWF2CB
ModelWF2CB
Warranty90 Day Limited

3. Max Water

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10" 1 Stage Standard Whole House Water Filter System Tannin/Nitrate Reduction Filter with Clear Filter Housing, Good for Well Water with Brown Discoloration

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Max Water #ad - Good for well water that has a brown discoloration that can't be removed with a sediment or Iron/Manganese filter. 6-12 months. Filter life is approx. This system comes with clear 10" Standard Whole House Filter Housing.

Plastic housing wrench is supplied to assist with screwing/unscrewing the housing without causing damage. Are you concerned with possible tannin or nitrate contamination in your water supply? our 10” Standard Whole House is a cost effective for smaller spaces such as RV's, apartments, cottages and any other light duty applications where space is at a premium. If you have a larger home/cottage or have more than 2 people using the water consistently, you may want to consider looking at some of our higher capacity systems. The anion resin filter uses good grade resin to help reduce and remove tannins and nitrates from incoming water.
BrandMax Water #ad
ManufacturerMax Water #ad
Weight4 Pounds
Part Number103145~104267

4. Oceanic Water Systems

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Nitrate Reduction Cartridge 4.5" x 20", Whole House Replacement Water Filter: Strong Base Anion

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Oceanic Water Systems #ad - Removes nitrate toxicity to protect newborns & infants from Blue Baby Syndrome. High uniform particle size offers greater resistance to resin bead breakage. Strong base anion resin filter for highest nitrate removal capacity up to 25, 000 ppm. Protects fish and aquariums from nitrate poisoning in the source tap water.
BrandOceanic Water Systems #ad
ManufacturerOceanic Water Systems #ad
Height20 Inches
Length4.5 Inches
Width4.5 Inches

5. APEC Water Systems

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APEC Water Systems FI-NITRATE 2.5"x10" Nitrate Reduction Specialty Water Filter

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APEC Water Systems #ad - Compatible with most standard 10 in. D x 10 in. Protects fish and aquarium life from toxic nitrate poisoning. 10 micron nominal rating, 2. 5 in. L. Removes both natural and man-made sources of nitrates. Under sink water filter housings. Produces safer drinking water free from nitrates for families with newborns and babies.
BrandAPEC Water Systems #ad
ManufacturerAPEC Water Systems #ad

6. Berkey

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Big Berkey BK4X2 Countertop Water Filter System with 2 Black Berkey Elements and 2 Fluoride Filters

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Berkey #ad - Includes big berkey stainless steel housing Upper, Lower, Lid and spigot etc. 2 black berkey Filters, and 2 Fluoride Elements. Holds 2. 25 gallons of purified water. Each 1 purification element has a lifespan of 3, 000 gallons. The big berkey is made with high grade 304 Stainless Steel and measures 8. 5"d x 21"h when assembled. Each 1 fluoride filter attaches onto the stem of the Black Element, 000 gallons 3, as a post filters, and can filter up to 1, 785 liters. That's 6, 000 gallons for a two-filter system. Designed for home use for 4 to 16 people.
BrandBerkey #ad
ManufacturerBerkey #ad
Height19.25 Inches
Length8.5 Inches
Weight10 Pounds
Width8.5 Inches
Part NumberBU2PK
ModelBK4x2-BB-PF-2

7. APEC Water Systems

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APEC WFS-1000 Super Capacity Premium Quality 3 Stage Under-Sink Water Filter System

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APEC Water Systems #ad - Feed water pressure: 20-85 psi. Premium long-lasting filters used to treat tap water, well water. Provide unlimited refreshing water. System comes with 100% Lead-Free chrome faucet, odorless, chlorine-free clean water. Guaranteed to remove chemicals i. E. Chlorine, taste and odors. 1 year satisfaction guarantee, with lifetime support by certified WQA water specialist based in CA. High quality, designed, engineered and assembled in the USA; System built with US MADE super capacity filters for long lasting dependable filtration. Not designed for TDS removal.
BrandAPEC Water Systems #ad
ManufacturerAPEC Water Systems #ad
Height12 Inches
Length6 Inches
Weight14 Pounds
Width15 Inches
Part NumberWFS-1000
ModelWFS-1000

8. APEC Water Systems

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APEC Water Systems ROES-50 Essence Series Top Tier 5-Stage Certified Ultra Safe Reverse Osmosis Drinking Water Filter System

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APEC Water Systems #ad - Only technology to remove up to 99% of contaminants such as chlorine, taste, odor, nitrates, arsenic, as well as toxic fluoride, lead, VOCs, heavy metals and 1000+ contaminants. System comes with 100% lead-free designer faucet, plus Certified JG Food grade tubing and parts to provide safe, contamination-free pure water.

Pipe size: 1/4 inches. Premium long-lasting filters used to treat tap water, well water. America's no. 1 rated water filter brand with 20 years of success guaranteeing trouble free, noise-free system for long lasting, dependable, pure drinking water. High quality leak-free quick connect fittings require no extra lock clips to seal leak, and does not rely on water leak detector to protect your home like other brands.

2 year extended manufacturer warranty with registration. Feed water pressure 40-85 psi. Supreme quality - designed, engineered, and assembled in USA to guarantee water safety & your health. Wqa certified system. System comes with all parts and industry's best instructions and videos for an easy DIY experience. Max total dissolved Solids - 2000 ppm. Provide unlimited clean, refreshing crisp tasting water superior to bottled water.
BrandAPEC Water Systems #ad
ManufacturerAPEC Water Systems #ad
Height17.5 Inches
Length16 Inches
Weight25 Pounds
Width5.25 Inches
Part NumberROES-50-A
ModelROES-50
Warranty1 Year APEC

9. Frigidaire

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Frigidaire ULTRAWF Pure Source Ultra Water Filter, 1 Count, White, Original

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Frigidaire #ad - Most reminder lights are reset by pressing and holding the water filter button on the dispenser control for 3 seconds. Designed to remove harmful contaminants giving you peace of mind with every glass. Push the new filter in until it clicks into place. Discard the water. Look for our berry-colored design with our new genuine filters seal on the package to know for certain your filter is authentic and sold by Frigidaire.

For details, see performance data sheet. The pure source ultra ultrawf is designed with a carbon-based filter to improve your water by removing the odor and taste of chlorine for smoother drinking, making it easy to keep the whole family hydrated. Always consult your use & care guide and run water through the dispenser for 3 minutes, or 1. 5 gallons, to prime the filter before use. Tested and certified by nsf international against NSF/ANSI Standards 42, 53 and 401.

Enjoy fresh tasting water right from the fridge and directly in your glass with the Pure Source Ultra water filter. When the display changes from red to green, the status has been reset. Take a sip and relax as you let your filter get to work reducing impurities found in common tap water such as lead, nitrates, pesticides, and mercury for worry free water at home. Run water through the new filter for 3 minutes to prime it. Your refrigerator’s reminder light does not turn off automatically.
BrandFrigidaire #ad
ManufacturerCommercial Water Distributing #ad
Height3.9 Inches
Length11.7 Inches
Weight0.9 Pounds
Width2.4 Inches
Part NumberULTRAWF
ModelUltraWF
WarrantyLIMITED