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Crystal Quest Water Filters
    • Whole house Filters every tap
    • Water softeners For hard water
    • Whole house RO RO for every tap
    • Under-sink reverse osmosis For drinking water
    • Under sink Fits under the sink
    • Countertop Sits by the faucet
    • Shower and bath For shower and bath
    • Inline On a water line

    Whole house

    • Whole house Water filters
    • Whole house Reverse osmosis
    • Whole house Salt-based softeners
    • Whole house Salt-free conditioner
    • All salt-free conditioners
    • UV sterilization
    All residential systems

    Drinking water

    • Countertop
    • Inline
    • Under sink RO
    • Countertop RO
    • Reverse osmosis guide
    • Faucet mount system
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    All drinking water

    Specialty filtration

    • Acid neutralizing
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    • Arsenic (whole house)
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    • Silica
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    • Turbidity (cloudy water)
    All specialty filters

    More ways to filter

    • Shower and bath filters
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    • Bundles
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  • By problem

    • Rotten egg smell
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    ZIP code Hardness on record Four levels Soft to very hard
    • Shower filter replacement cartridge
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    Cartridges and media

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    RO membranes and components
    • Under sink RO membrane
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    Type the code printed on your cartridge.

    Common part numbers

    • Pitcher
    • CQE-RC-04002 SMART cartridge
    • CQE-RC-04000 Carbon block
  • Commercial and industrial

    Every system built to order

    Quotes on request, from a single inline filter to industrial reverse osmosis.

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    Industries

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    All industries

    Reverse osmosis

    • Brackish water RO
    • Seawater desalination
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    • Dosing and pretreatment
    • Industrial RO
    • Industrial fresh water
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    • Industrial seawater
    Commercial RO

    Commercial systems

    • SMART systems
    • GAC systems
    • Inline systems
    • Ultrafiltration
    • Commercial softeners
    • Traditional softeners
    • Salt-free anti-scale
    • Demineralizers (DI)
    • Water stores

    Industrial

    • Industrial filtration
    • Nanofiltration
    • Industrial desalination
    • Ozone systems
    • Industrial UV
    • Chlorination
    • Industrial softeners
    • Industrial salt-free
    • Deionization
    • Wastewater reclamation
    • Containerized systems
    • Cartridge housings
    • Disaster relief
    Commercial/industrial specialty systems
    • Acid neutralizing (commercial)
    • Arsenic removal
    • Fluoride removal
    • Lead removal
    • Nitrate removal
    • Tannin removal
    • Turbidity removal
    • Iron, manganese, sulfide
    • Radium and uranium (commercial)
    • Sulfate removal
    • Silica removal
    • Alkalizer and mineralizer
  • Full water tests

    • City water test
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    • Radiological test
    • Complete RO water test
    • Problem check test
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    • FHA and VA loan test
    All water tests

    Test collections

    • Specialty tests
    • Quick series tests
    • BART bacteria tests
    • Contaminant-specific tests

    Single contaminant tests

    • Lead test
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    • Quick bacteria test
    • Nitrate and nitrite test
    • Radon test
    • Uranium test

    Free tools

    • Water hardness by ZIP
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    • Water report analyzer
    • Lead in water lookup
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    Compare your lab results with EPA limits.

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  • Explore our hubs

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    Need help? Get expert support from water filtration specialists (800) 934-0051 help@crystolquest.shop

    A water specialist can help you choose and care for your system, Monday to Friday, 9am to 5pm ET.

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  • Whole house
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Need help?(800) 934-0051

Finding a replacement?

Find the system you own, then confirm its replacement. A model or cartridge code helps.

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Need help with your system?

For leaks or a system that is not working, send our team the model and a description of the problem.

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Try the code printed on your cartridge, a product name, or a problem like hard water. Or let us find it for you. Talk to a specialist

Popular searches

  • Shower filter
  • Whole house filter
  • High flow
  • Reverse osmosis
  • In-line refrigerator filter
  • Water softener

Popular replacements

See all replacements
  • Coconut Based 5-Micron Carbon Block cartridge From $22.95
  • SMART cartridge From $59.00
  • Shower Filter cartridge From $29.50
  • Bath Ball® cartridge From $39.50

Quick links

  • Check your water Hardness by ZIP code
  • Well water filter finder A short quiz that matches a system
  • Water test kits Lab tests for city and well water

Popular guides

  • How Often to Change Your Water Filter 14 min read
  • Whole House Water Filter Maintenance 11 min read
  • Hard Water 101 19 min read
  • How to Test Water Hardness at Home 6 min read

Common part numbers

  • CQE-RC-04000 Coconut Based 5-Micron Carbon Block cartridge
  • CQE-RC-04002 SMART cartridge
  • CQE-RC-04045 Shower Filter cartridge
  • CQE-RC-04052 Bath Ball® cartridge

  1. Home
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Finding a replacement?

Find the system you own, then confirm its replacement. A model or cartridge code helps.

Find replacements for my system Find your model or part number

Need help with your system?

For leaks or a system that is not working, send our team the model and a description of the problem.

Get product support Visit the Help Center

Results for “high flow”

151 results

All Products Guides Pages

Guides

  • Guide · September 22, 2026

    What Is Brackish Water? Salinity, Sources and Safety

    Saltier than fresh water, not as salty as the sea. How to tell if your water is brackish, and which filters can and can't take the salt out.
  • Guide · July 6, 2026

    Do Energy Drinks Dehydrate You? The Science Explained

    The answer comes down to sugar, caffeine dose, and what your body is used to. See what the research says, and the better ways to stay energized.
  • Guide · June 5, 2025

    Water Softener vs Water Conditioner: Which Do You Need?

    Compares how Softeners and Conditioners work, cost, their economic impact, and maintenance.
  • Guide · June 23, 2026

    Best Water for Coffee: A Water Expert's Brewing Guide

    Your coffee is about 98% water, so its minerals and purity shape every cup. Here is what a water filtration expert recommends for better coffee at home.
  • Guide · June 13, 2026

    PFAS in Well Water: Risks, Testing, and Removal

    No utility tests a private well for forever chemicals. Here is how PFAS reach well water, how to confirm it, and the filters that actually remove it.
  • Guide · August 12, 2026

    Whole House Reverse Osmosis: Pros, Cons, and Who Actually Needs One

    Whole House Reverse Osmosis Pros and Cons: The Short Answer A whole house reverse osmosis system is the most complete water treatment you can put in a home. Nothing else purifies every...
  • Guide · May 28, 2025

    Why Water Hardness Matters: Hidden Costs, Health Effects, and How to Fix It

    Hard water costs you more than you think. Learn how it impacts your energy bills, appliances, skin, hair, and the environment.
  • Guide · March 22, 2026

    Distilled Water vs Reverse Osmosis: Which Is Better for Your Home?

    Distilled water and reverse osmosis both produce clean drinking water, but they differ in cost, speed, taste, and long-term value. Here's how they compare and which one makes more sense for your...
  • Guide · July 22, 2026

    What Is Club Soda? Ingredients, Uses, and Differences

    What club soda really is, how it differs from seltzer, sparkling water, and tonic, and why filtered water makes the best homemade batch.
  • Guide · July 21, 2026

    How Long Do Water Filter Pitchers Last? Cartridge Lifespan and Replacement Signs

    How Long Do Water Pitcher Filters Last? A basic carbon pitcher cartridge, the kind most disposable pitchers ship with, lasts about two months, or roughly 40 gallons of water, whichever comes first....
  • Guide · July 9, 2025

    How Reverse Osmosis Systems Remove PFAS

    Reverse osmosis removes up to 99% of PFAS through physical size exclusion. Learn how RO membranes work, which PFAS types they block, and how to choose the right system.
  • Guide · July 24, 2025

    10 Benefits of Owning a Home Reverse Osmosis System in 2026

    Reverse osmosis water benefits go beyond clean taste. Here's what a home RO system actually delivers in 2026, from contaminant removal to bottled-water savings.
  • Guide · April 29, 2025

    Whole House Water Filtration: How Point-of-Entry Systems Protect Every Tap

    A whole house water filter treats water at the main line before it reaches any faucet, shower, or appliance. Learn what POE systems remove, how different filter types work, and how to...
  • Guide · September 16, 2026

    Water Softener Loop: Which Lines Should Get Soft Water?

    Hot only, whole house, or everything but the kitchen cold tap? See what each softener layout covers, what it leaves hard, and what to do without a loop.
  • Guide · June 20, 2026

    How to Remove Chlorine From Water: 7 Methods Compared

    Chlorine keeps tap water safe in transit, but you do not need it at home. Compare 7 proven ways to remove chlorine and chloramine from your water.
  • Guide · May 27, 2025

    What Causes Hard Water? 5 Natural Causes and How to Fix It

    That white scale on your faucet starts underground. Here's why your water is hard, what it costs you, and how to stop it.
  • Guide · July 4, 2026

    Can Dogs Drink Tap Water? What Every Owner Should Know

    Is your tap water safe for your dog? A clear look at the contaminants that matter, why small dogs are more exposed, and easy ways to upgrade the bowl.
  • Guide · December 28, 2025

    Hard Water and Your Skin: The Hidden Cause of Dryness, Irritation, and Dull Hair

    Your expensive skincare routine might be fighting a losing battle. If you have hard water, minerals are damaging your skin and hair faster than products can repair them.
  • Guide · September 14, 2026

    Why Does My Tap Water Taste Salty, Chalky, or Metallic This Summer?

    Your water tasted fine in spring. Here is what a hot, dry summer changes at the tap, and which taste points to which fix.
  • Guide · March 18, 2026

    How to Test Your Water at Home: What to Look For and What to Do About It

    Testing your water is the best way to protect your family and your home. Learn what to look for, how to test, and what to do about the results.
  • Guide · June 16, 2026

    Laboratory Water Grades: Type I, II, and III Explained

    The water in your lab is a reagent. Here is what Type I, II, and III grades actually mean, and how to choose the right purity for each application.
  • Guide · June 21, 2026

    What Does Reverse Osmosis Remove? Full Contaminant Guide

    Wondering what an RO system actually filters out? Here is the full contaminant-by-contaminant breakdown, with removal rates and the honest limits.
  • Guide · June 15, 2026

    Water Softener Leaking? How to Find the Source and Fix It

    A leaking water softener usually points to one of a few specific parts. Here is how to find where the water is coming from and what to do next.
  • Guide · July 22, 2026

    Is Lemon Water Good for You? 10 Science-Backed Benefits

    Lemon water offers real benefits: vitamin C, hydration, kidney stone prevention, and more. Here are 10 science-backed reasons to drink it, plus side effects.
Previous page 1…4567 Next page
  • Eco friendly

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    Quality management for product quality, customer satisfaction and steady improvement.

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  • Built in the USA

    Supporting American jobs and contributing to our nation's economic growth.

Fresh water begins here®

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