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Made in USA

Free shipping on residential orders over $150 within the lower 48 US statesFree shipping over $150 (residential, lower 48)

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Drinking water

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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

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

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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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Fluoride

Lead

Iron, manganese and sulfur

Microplastics

Nitrate

PFAS

All contaminants

By water source

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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
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

Parts directory

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.

Cartridge code or system

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.

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

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

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

Document Center

YouTube channel
Articles by topic

Filtration systems

Contaminants

Filtration technology

Filter types

Applications
Help and support

Help center

Order status

Manage subscription

Returns

Warranty

Installation guides

Submit a ticket Opens in a new window.

Contact us
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 (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

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.

ZIP code

Replacements

Menu Replacements

Replacements

Shower filter replacement cartridge
Bath Ball® replacement cartridge
Pitcher replacement cartridge
Filter cartridges

Find my filter

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

Search products, part numbers and guides

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

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