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Crystal Quest Water Filters
    • Whole house Filters every tap
    • Water softeners For hard water
    • Reverse osmosis For drinking water
    • Under sink Fits under the sink
    • Shower & bath For shower and bath
    • Whole house RO RO for every tap
    • Countertop Sits by the faucet
    • 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 softeners
    • 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

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    • Off-grid portable RO
    • Chemical dosing
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    • Bundles
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    Not sure which system you need?

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    Or try a focused quiz

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  • 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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    All contaminants

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    • Older home built before 1986

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

    ZIP codeHardness on record Four levelsSoft to very hard
    • Shower filter replacement cartridge
    • Bath Ball® replacement cartridge
    • Pitcher replacement cartridge
    • Filter cartridges
    • RO membranes
    • RO filter packs
    • UV bulbs & parts

    Cartridges and media

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    Find my filter

    Type the code printed on your cartridge.

    Common part numbers

    • CQE-RC-04047 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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    All industries

    Reverse osmosis

    • Commercial RO
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    • Seawater desalination
    • Medical-use RO
    • Dosing and pretreatment
    • Industrial RO
    • Industrial fresh water
    • Industrial brackish water
    • Industrial seawater
    All 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.

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  • Explore our hubs

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

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

Search filters, cartridges or a SKU Cart, 0 items 0
  • Whole house
  • Drinking water
  • Shower and bath
  • Softeners
  • Well water
  • Replacements
Crystal Quest Water Filters
Search filters, cartridges or a SKU
Water filters

Menu Water filters

Water filters

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

Shop by category

  • Whole house Filters every tap
  • Water softeners For hard water
  • Reverse osmosis For drinking water
  • Under sink Fits under the sink
Whole house
  • Whole house Water filters
  • Whole house Reverse osmosis
  • Whole house Salt-based softeners
  • Whole house Salt-free conditioner
  • All salt-free softeners
  • 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
Water problems

Menu Water problems

Water problems

  • City water Chlorine, chloramine
  • Well water Iron and sulfur
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
  • Arsenic
  • Fluoride
  • Lead
  • Iron, manganese and sulfur
  • Microplastics
  • Nitrate
  • PFAS
  • All contaminants
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.

Replacements

Menu Replacements

Replacements

  • Shower filter replacement cartridge
  • Bath Ball® replacement cartridge
  • Pitcher replacement cartridge
  • Filter cartridges
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
  • All RO membranes
Parts and equipment
  • Shop all parts
  • UV bulbs & parts
  • Valve control heads
  • Pumps and motors
  • Parts directory
Get help
  • Help center
  • Reorder from past orders
  • Find my filter
  • Subscribe and save
  • How often to change filters
  • When to replace a UV lamp
  • About RO membranes
Commercial & industrial

Menu Commercial & industrial

Commercial & 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.
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
Reverse osmosis
  • Commercial RO
  • Brackish water RO
  • Seawater desalination
  • Medical-use RO
  • Dosing and pretreatment
  • Industrial RO
  • Industrial fresh water
  • Industrial brackish water
  • Industrial seawater
  • All commercial RO
Commercial systems
  • SMART systems
  • GAC systems
  • Inline systems
  • Ultrafiltration
  • Commercial softeners
  • Traditional softeners
  • Salt-free anti-scale
  • Demineralizers (DI)
  • Water stores
Commercial/industrial specialty systems
  • All 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
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
Water testing

Menu Water testing

Water testing

Have a lab report?

Compare your lab results with EPA limits.

Analyze my report
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
  • Lead in water lookup
  • Hardness converter
  • Softener size calculator
  • All water tools
Resources and help

Menu Resources and help

Resources and help

  • Knowledge base
  • Educational articles
  • Video resources
  • Document Center
  • YouTube channel
Help and support
  • Help center
  • Order status
  • Manage subscription
  • Returns
  • Warranty
  • Installation guides
  • Submit a ticket Opens in a new window.
  • Contact us
Articles by topic
  • All articles
  • Filtration systems
  • Contaminants
  • Filtration technology
  • Filter types
  • Applications
Company
  • About us
  • Reviews
  • Trustpilot reviews Opens in a new window.
  • Custom manufacturing
  • All business opportunities
Need help? Get expert support from water filtration specialists
  • Talk to a specialist(800) 934-0051, Mon to Fri, 9am to 5pm ET
  • Email ushelp@crystalquest.com

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

Find my system Call

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

Common part numbers

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

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

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

  1. Home
  2. Search

Results for “water softener”

51 results

All Products Guides Pages

Pages

  • Page

    Water Softener Quiz

  • Page

    Commercial Water Softener Systems

    Commercial Water Softener Systems Crystal Quest® Commercial Water Softener Filter Systems are designed and manufactured for outstanding service and are ideal for treating a variety of different water problems. Utilizing the best...
  • Page

    Water Softener Regeneration Calculator

  • Page

    Industrial Water Softener Systems

  • Page

    Water Softener Comparison Guide

    Exchange Capacity (Grains) @15 #/ Ft3 30,000 30,000 45,000 45,000 60,000 60,000 90,000 120,000 210,000 300,000 450,000 600,000 900,000 1,200,000 Model CQE-CO-02037 CQE-CO-02038 CQE-CO-02039 CQE-CO-02040 CQE-CO-02041 CQE-CO-02042 CQE-CO-02043 CQE-CO-02044 CQE-CO-02045 CQE-CO-02046 CQE-CO-02047...
  • Page

    commercial water softeners

  • Page

    EAGLE® SOFT SALT-FREE WATER SOFTENER FAQ'S

    What is hard water and why soften it? Hard water contains a high percentage of dissolved minerals such as calcium and magnesium and multivalent cations. Hard water can produce scale, which is...
  • Page

    Do Salt-Free Water Softeners Work?

    Hard water can also produce a rock-like scale that builds up in pipes, water heaters, plumbing fixtures, dishwashers and other water-related appliances. Do Salt-Free Water Softeners Work Many questions arise when people...
  • Page

    Water Softener Sizing Calculator | Calculate Grain Requirements

  • Page

    Industrial Salt-Free Water Softener (Anti-Scale) Systems

  • Page

    Full-Size Water Filters

    Economy Family Size: 1-3 people  4 Stages of Filtration   Fiberglass Tank; 1.5 Cu. Ft. Media  Service Flow: 7-9 GPM  System Capacity: 600,000 Gallons  Pre-Filter: Sediment Post-Filter: Carbon Block  Up-Flow Down-Flow Backwash   Bypass Valve...
  • Page

    How Iron Water Filters Work

    Effective for Reducing Iron & Manganese CRYSTAL QUEST ® Utilizing the latest technologies in water industry, coupled with 30 years of manufacturing expertise, we provide you with the most effective, healthy, great-tasting...
  • Page

    Frequently Asked Questions About Water

    Water Basics Water is generally classified into two groups: Surface Water and Ground Water. Surface water is just what the name implies; it is water found in a river, lake or other...
  • Page

    How Arsenic Water Filters Work

    Crystal Quest® utilizes the latest technologies in the water industry, coupled with 30 years of manufacturing expertise, we provide you with the most effective, healthy, great-tasting water conveniently at the most affordable price....
  • Page

    Water Tests

    Understand What's in Your Water Crystal Quest® has partnered with National Testing Laboratories, a trusted leader in water analysis, to bring you accurate and reliable water testing. From well and city water...
  • 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

    Home Water Filters

    Whole House Water Filters Clean Water From Every Faucet Explore ❯ These POE (point of entry) filters are the perfect addition to any sized home, apartment, or condo. These filters install at...
  • Page

    Learn water (presentation)

    Welcome, Junior Water Filtration Specialist! Today you learned all about water filtration — how water gets tested, how filters work, and what it takes to be a real water specialist. You now...
  • 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

    Whole House Water Filters

    Whole House Water Filters SMART Whole House Water Filter Our flagship system for whole home protection. SMART Whole House Water Filters reduce & remove harmful contaminants using our special house blend known...
  • Page

    What's in Your Water?

    What is in your water? How do you find out? If you live in a major city,  finding out what's in your water is simple as a search on the EPA's website by...
  • 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

    Control Valves for Water Filtration

    Are you looking for efficient, durable, and innovative valve control heads? Our collection of analog and digital NXT valves stand out for their exceptional reliability, robust construction, and cutting-edge technology, offering superior...
  • 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...
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  • Whole home
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Specialty filters

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  • Lead
  • Arsenic
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  • Microplastics
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Commercial and industrial

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