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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
    • Water pitcher
    All drinking water

    Specialty filtration

    • Acid neutralizing
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    • Arsenic (whole house)
    • Radium and uranium
    • Silica
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    • Tannins
    • Turbidity (cloudy water)
    All specialty filters

    More ways to filter

    • Shower and bath filters
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    • Chemical dosing
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    • Bundles
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  • By problem

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    Enter your ZIP code to see the tap water hardness on record for your area.

    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
    • Medical-use RO
    • 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
    • Well water test
    • Radiological test
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    • Problem check test
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    • FHA and VA loan test
    All water tests

    Test collections

    • Specialty tests
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    • Contaminant-specific tests

    Single contaminant tests

    • Lead test
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    • Fluoride test
    • 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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    All water tools

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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?

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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
  2. Search

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 · July 22, 2026

    Water Treatment for Hotels and Hospitality: Scale, Laundry, and Guest-Room Water

    Hard water quietly runs up a hotel's energy, laundry, and maintenance bills and spots the glassware guests notice. Here is what to treat and how to size it.
  • Guide · June 26, 2026

    How to Remove Manganese From Well Water

    Black stains on your sinks and laundry often point to manganese in your well water. Here is why it is trickier than iron, and how to get it out for good.
  • Guide · July 17, 2026

    Reverse Osmosis Waste Water: The Real Drain Ratio

    Worried reverse osmosis wastes too much water? Here is the real drain ratio, what drives it, and how efficient systems keep more water in your glass.
  • Guide · September 19, 2026

    Saltwater Intrusion in Well Water: Signs, Testing and What to Do

    A rising chloride number tells you more than a salty taste. Here's how coastal well owners can test for saltwater intrusion, read the results and respond.
  • Guide · July 25, 2026

    Why Does Soft Water Feel Slippery? The Science of Softened Water

    That slick, silky feeling after a new softener isn't soap residue. It's a sign your water is doing exactly what softened water should.
  • Guide · June 24, 2026

    RO vs UV vs UF: Which Water Treatment Do You Actually Need?

    RO, UV, and UF are not competitors. RO handles dissolved solids and chemicals, UV disinfects, and UF strains out particles. Here is how to pick.
  • Guide · June 16, 2026

    Filtered Water vs Purified Water: What's the Difference?

    Is filtered water the same as purified water? Not exactly. One is a method, the other a standard the water must meet. Here is the difference.
  • Guide · August 26, 2025

    Nanofiltration for Water Softening: How It Works and When to Use It

    Nanofiltration is a salt-free, membrane-based way to soften water. Here's how it differs from ion exchange, RO, and TAC/NAC, and when it's actually the right choice.
  • Guide · September 15, 2026

    How to Purify Water in an Emergency or Off the Grid

    Start with the cleanest water you can find, clear it, then kill the germs. How each emergency method works, and what none of them remove.
  • Guide · June 17, 2026

    How to Remineralize Reverse Osmosis Water

    RO water tastes flat because the minerals are gone. Here are the simple ways to add them back, and which one is actually worth it.
  • Guide · June 29, 2026

    Does Purified Water Have Minerals? What You Need to Know

    Most purification methods remove minerals from water, but not all of them, and the health impact may be smaller than you think. Here is the full picture.
  • Guide · August 22, 2025

    How to Test Your Well Water: A Complete Testing Guide

    If you're on a private well, nobody's testing your water but you. Here's exactly what to test for, how to collect a sample the right way, and how to read the results...
  • Guide · July 23, 2026

    How Does a Private Well Work? A Homeowner's Guide

    Own a well or about to? Here is the plain-English walkthrough of how a private well moves water from the aquifer to your kitchen tap, part by part.
  • Guide · July 16, 2026

    Does Drinking Water Help With Anxiety? What the Research Actually Shows

    Feeling anxious and dehydrated often go together. Here is what the research says about water, stress hormones, and the quality of what you drink.
  • Guide · August 13, 2025

    What Impacts the Cost of a Whole House Reverse Osmosis System?

    What drives whole-house RO pricing: system capacity, storage tanks, pretreatment, installation, and ongoing maintenance costs.
  • Guide · July 19, 2026

    How to Use a TDS Meter (and What It Can't Tell You)

    A TDS meter reads how much dissolved mineral is in your water, not whether it's safe. Here's how to use one right, and where the number stops being useful.
  • Guide · June 16, 2026

    Why Is My Reverse Osmosis Water Cloudy? Causes and Fixes

    Cloudy, milky, or discolored RO water? Most cases are just harmless trapped air. Here's how to tell what's wrong and fix it, step by step.
  • Guide · July 13, 2026

    Ozone Water Treatment: What It Removes and How It Works

    Ozone destroys bacteria, cyanotoxins, iron, and odor compounds through oxidation, then reverts to oxygen and leaves no chlorine-type residual. Here is how it works.
  • Guide · June 19, 2026

    10 Benefits of Water Filtration (And How to Choose the Right System)

    Filtration closes the gap your utility leaves behind, cutting contaminants like lead and PFAS that meet legal limits but you would rather not drink.
  • Guide · September 15, 2026

    In-Home Water Test Demonstrations: What They Really Show

    A kitchen water demonstration can make almost any tap water look bad. Here's the chemistry behind each one and what a real water test looks like.
  • Guide · September 12, 2025

    Anion vs Cation Exchange: A Simple Guide

    Cation resin pulls out positive ions like calcium and magnesium. Anion resin grabs negative ones like nitrate and PFAS. Here's the simple difference, and when each one matters.
  • Guide · March 24, 2026

    What Is the Healthiest Water to Drink? A Water Quality Expert's Honest Answer

    Tap, bottled, spring, mineral, alkaline, RO. Which water is actually the healthiest to drink? A water filtration manufacturer breaks down the real science.
  • Guide · April 28, 2026

    What Is RO Rejection Rate? (And How to Calculate Your System's)

    Wondering if your reverse osmosis system is still doing its job? Rejection rate is the one number that tells you, and you can check it yourself in five minutes.
  • Guide · May 6, 2025

    Arsenic in Drinking Water: Health Risks, Testing, and How to Remove It

    Arsenic is invisible in water and classified as a Group 1 carcinogen. Learn how it enters your water, how to test for it, the difference between Arsenic III and V, and which...
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  • Built in the USA

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

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