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

    More ways to filter

    • Shower and bath filters
    • Water coolers
    • Off-grid portable RO
    • Chemical dosing
    • Oxidation disinfection
    • Ozone disinfection
    • UV air sterilizer
    • Bundles
    • Gift card

    Not sure which system you need?

    Answer a few questions about your water and home to find the right system.

    Take the quiz

    Or try a focused quiz

    • Well water filter finder
    • Water softener quiz
  • By problem

    • Rotten egg smell
    • Pool smell or chlorine taste
    • Orange or rust stains
    • Black or brown stains
    • Blue-green stains
    • Cloudy water
    • Tea-colored water

    By contaminant

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    • Lead
    • Iron, manganese and sulfur
    • Microplastics
    • Nitrate
    • PFAS
    All contaminants

    By water source

    • City water Chlorine, chloramine
    • Well water Iron and sulfur

    Where you live

    • Near a military base, airport or fire training site
    • Near a farm
    • Near the coast
    • Granite or mountain areas
    • Older home built before 1986

    How hard is your water?

    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
    • Bath Ball® replacement cartridge
    • Pitcher replacement cartridges
    • Filter cartridges
    • RO membranes
    • RO filter packs
    • UV bulbs & parts

    Cartridges and media

    • Replacement cartridges
    • Filtration media & resins
    • RO filter packs
    RO membranes and components
    • Under sink RO membrane
    • Low energy freshwater RO membrane
    • Brackish RO membrane
    • Desalination RO membrane
    • Membrane cleaners
    • RO parts and accessories
    • Water storage tanks
    Parts and equipment
    • UV bulbs & parts
    • Valve control heads
    • Pumps and motors
    Get help
    • Reorder from past orders
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    • How often to change filters
    • When to replace a UV lamp
    • About RO membranes

    Find my filter

    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.

    Request a quote Opens in a new window. (800) 934-0051

    Industries

    • Agriculture and farming
    • Breweries
    • Cannabis cultivation
    • Commercial laundry
    • Food and beverage
    • Government and municipal
    • Medical and lab
    • Mining, oil and gas
    • Multi-residential
    • Plants and manufacturing
    • Schools and campuses
    • Service industries
    All industries

    Reverse osmosis

    • Brackish water RO
    • Seawater desalination
    • Medical-use RO
    • Dosing and pretreatment
    • Industrial RO
    • Industrial fresh water
    • Industrial brackish water
    • 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
    • Complete RO water test
    • Problem check test
    • Waterborne pathogen panel
    • 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
    • Arsenic test
    • Fluoride test
    • Quick bacteria test
    • Nitrate and nitrite test
    • Radon test
    • Uranium test

    Free tools

    • Water hardness by ZIP
    • PFAS map
    • Water report analyzer
    • Lead in water lookup
    • Hardness converter
    • Softener size calculator
    All water tools

    Have a lab report?

    Compare your lab results with EPA limits.

    Analyze my report
  • Explore our hubs

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    Articles by topic
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    • Custom manufacturing
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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
  • Water softeners
  • Whole house RO
  • Under-sink reverse osmosis
  • Under sink
  • Countertop
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  • Well water
  • Replacements

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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.

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

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 “Reverse osmosis”

45 results

All Products Guides Pages

Pages

  • Page

    Reverse Osmosis

    The Crystal Quest® Difference Reverse osmosis (RO) is a water purification technology that uses a semipermeable membrane to remove larger particles from drinking water. In reverse osmosis, an applied pressure is used...
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    Reverse Osmosis Membrane

      TFC Membrane *Nominal Rejection Characteristics of Reverse Osmosis Membranes ION % Rejection ION % Rejection Calcium 95 - 98 Bromide 93 - 96 Sodium 94 - 98 Phosphate 97 - 98...
  • Page

    Whole House Reverse Osmosis

    Whole House Reverse Osmosis Water Systems Enjoy purified water from every faucet of your home. A Whole House Reverse Osmosis (RO) system is a great solution if you are faced with multiple...
  • Page

    Industrial Reverse Osmosis Systems

    Industrial Reverse Osmosis Systems Customizable to Meet Your Business Needs Crystal Quest provides a comprehensive range of industrial reverse osmosis systems, including freshwater, brackish water, desalination solutions, and fully customizable options to...
  • Page

    About Reverse Osmosis Membranes

    TFC Membrane *Nominal Rejection Characteristics of Reverse Osmosis Membranes ION  % Rejection  ION  % Rejection  Calcium  95 - 98  Bromide  93 - 96  Sodium  94 - 98  Phosphate  97 - 98  Magnesium ...
  • Page

    Reverse Osmosis Parts & Accessories

    Reverse Osmosis Parts & Accessories RO Check Valves RO Faucets RO Tanks RO Pressure Guages RO Brackets & Clips Membrane Housings & Parts RO Membranes Replacement RO Filter Packs
  • Page

    Commercial Reverse Osmosis Systems

    Commercial Reverse Osmosis Systems Customizable to Meet your Business Needs. All systems are shipped out fully assembled providing for easy installation. All membrane systems are factory tested to ensure quality, performance, and...
  • Page

    Reverse Osmosis Rejection Rates

    Reverse osmosis pushes water through a thin film composite (TFC) membrane so fine, about 0.0001 micron, that water passes through and most dissolved minerals, metals and chemicals do not. What the membrane...
  • Page

    Reverse Osmosis Desalination Systems

    Shark® Salt Water Filtration (Desalination) A Crystal Quest® SHARK® Reverse Osmosis (RO) system is a great solution if you are faced with multiple water issues or if you are trying to achieve...
  • Page

    Reverse Osmosis for Brackish Water

    Brackish Reverse Osmosis Systems Brackish Water Brackish water or briny water is water that has more salinity than fresh water, but not as much as seawater. It may result from mixing of...
  • Page

    Off-Grid Reverse Osmosis Water System

    Off-Grid, Portable Reverse Osmosis Water System - 200 Gallons Per Day Explore the world with clean, safe drinking-water. The Crystal Quest Off-Grid Reverse Osmosis Water System is a portable, compact, mobile, and...
  • Page

    Medical & Laboratory Water Filtration

    Laboratory & Medical Water Filtration Laboratory & Medical Water Filtration Superior Medical Water Filtration Systems: Ensuring Uncompromising Purity for Essential Lab & Healthcare Applications Transforming Healthcare with Advanced Medical Water Filtration Solutions...
  • Page

    Coffee Water Filtration

    Coffee Water Filtration Elevate Your Coffee Experience with Crystal Quest Water Filters Smart GAC Filtration System SMART GAC Water Filtration System reduces & removes harmful contaminants using our special house blend known...
  • Page

    Comparison Chart

     Comparison Chart for Under Sink Reverse Osmosis THUNDER® Series C, M & P Models  *Faucet and hardware are included.  - 1,000C 1,000M  2,000C 2,000M 3,000C 3,000M 4,000C 4,000M Stages of Filtration 12 15...
  • Page

    Pump Quick Guides

    Pump Product Quick Guides Your source for detailed information on America's best pumps. Pumps G20B7-3M Pump Key Features: Materials: Stainless steel and cast iron for durability. Impellers: Made from high-strength materials for...
  • Page

    Custom Manufacturing.

    Custom Manufacturing High Quality Components To guarantee a reliable and durable product, Crystal Quest® custom water and air treatment systems are manufactured with the highest quality components by Scientific World Products.  ...
  • Page

    Chlorine In Your Home

    Water contains chlorine. Millions of people consume chlorinated tap water every day. What chlorine is Carl Wilhelm Scheele, a Swedish pharmacist, dropped a few drops of hydrochloric acid upon a bit of...
  • Page

    What Is Ultrafiltration?

    NEW ARRIVALS Ultrafiltration Systems & Membranes Ultrafiltration (UF) is a membrane filtration process similar to Reverse Osmosis, using hydrostatic pressure to force water through a semi-permeable membrane. Call To Order What is...
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    Premium Water Filtration Systems for Breweries

    Brewery Water Filtration Brewery Water Filtration Experience Unparalleled Taste Consistency and Quality with Crystal Quest's Advanced Filtration Solutions Elevate your brewery's craft and taste with Crystal Quest's industry-leading water filtration solutions designed...
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    Drinking Water Filters

    Countertop Water Filters Filtered Water at an Affordable Price Explore ❯ Our Countertop Water Filters are available in a variety of sizes, colors, and configurations. These filters conveniently provide purified water near...
  • Page

    Replacements

    Cartridges Explore ❯ Countertop Systems Under Sink Systems Shower and Bath Filters Water Coolers Inline Filters Reverse Osmosis Systems And More... Filtration Media Explore ❯ Granular Activated Carbon (GAC) SMART Media Eagle...
  • Page

    Cannabis Water Filtration

    Cannabis Water Filtration Cannabis Water Filtration Optimize Your Commercial Cannabis Cultivation with Crystal Quest's Commercial RO Systems Unlock the full potential of your commercial cannabis operation with Crystal Quest's cutting-edge water filtration...
  • Page

    Commercial Laundry Water Filtration

    Commerical Laundry Water Filtration Commercial Laundry Water Filtration Crystal Quest provides cutting-edge water filtration solutions for the Commercial Laundry industry Delivering Unrivaled Water Filtration Solutions for Commercial Laundry we specialize in providing...
  • Page

    Buyer's Guide

    This easy Buyer's Guide is designed to help navigate through all of Crystal Quest's Whole House Systems to find the perfect water filtration system for your home & family. Achieve the filtered water...
12 Next page
  • Eco friendly

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    View certification (PDF, opens in a new tab)
  • Built in the USA

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

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