Whole House Water Filters, Reverse Osmosis & Water Softener Systems by Crystal Quest

Whole House Reverse Osmosis Systems for Pure, Great-Tasting Water

Experience up to 99% contaminant reduction for your entire home with Crystal Quest whole house RO systems. Engineered for efficiency, durability, and performance.

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Whole House Water Filters & Filtration Systems

From advanced SMART whole house water filters to specialty systems for fluoride and arsenic, Crystal Quest delivers clean, great-tasting water to every tap - while protecting plumbing and removing contaminants.

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Whole House Water Softener Systems

Softer, cleaner water at every tap. Crystal Quest whole house water softeners remove hard water minerals, protect plumbing, and improve water quality throughout your home.

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Eagle Whole House Alkalizing Water Filters

Premium whole house and home water filtration with alkalizing technology - removes a wide range of contaminants, raises pH naturally, and delivers cleaner, healthier water to every tap.

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Under Sink Water Filters

Advanced under sink water filtration systems that remove:

Fluoride Removal (including Hexafluoric acid)
Chlorine Removal
Metals such as lead, iron, and more.
PFAS, sediments, and other impurities.

Cleaner, healthier drinking water - straight from your tap.

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Shower Filters & Bath Filter Collection

Advanced shower and bath water filters that reduce chlorine, chemicals, and impurities - helping keep skin softer, hair healthier, and water cleaner. Easy, no-installation designs available.

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Water Filter Cartridges

What's in your water? Get the most from you water filter and water filtration systems. Keep your water clean with new replacement cartridges.

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Commercial Water Filtration Systems

From restaurants to breweries, Crystal Quest systems are built for performance, durability, and custom filtration needs. Choose SMART, GAC, or Inline designs based on your application.

Find Your Industry Solution

Rover OFF-GRID Portable RO System

The Crystal Quest Off-Grid portable reverse osmosis system is built for portability and remote use, combining Reverse Osmosis and media filtration to purify water from lakes, streams, and rivers. With a compact case, solar kit, battery, and booster pump, set is simple-just place the panel in sunlight, connect the tubing, and flip the switch for clean water anywhere.

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Water Filter Media

From the removal of fluoride, lead, arsenic, and other contaminants, to pH balancing, water softening, alkalinity maintenance, and more.

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Crystal Quest is Trusted By

Best Selling Water Filters

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Shower Filter

From $40.95

4.9 (230)

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Bath Ball® Filter

From $64.95

4.9 (220)

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SMART Filter Cartridge

From $59.00

5.0 (176)

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Coconut Based 5-Micron Carbon Block Filter Cartridge

From $22.95

4.9 (137)

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Shower Filter Replacement Cartridge

From $29.50

5.0 (148)

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Water Pitcher Filter System

From $39.95

4.8 (111)

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Big Blue Whole House Water Filter | Metal Removal (4-6 GPM | 1-2 people)

From $435.36

5.0 (14)

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SMART Whole House Water Filter (9-13 GPM)

From $1,791.00

4.8 (17)

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Whole House Reverse Osmosis System

From $2,227.00

5.0 (6)

Popular Filters

Explore the most popular Crystal Quest water filters and filtration systems, chosen by thousands of people worldwide.

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Find the Best Water Filtration Systems

Home Water Filters

Shop Crystal Quest residential water filters for home use. Find the best water filtration system for home use.

Shop Home Water Filters

Commercial Water Filters

Explore commercial-grade water filtration systems for diverse applications such as breweries, service industries, and more.

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Industrial Water Filters

Discover industrial water filtration systems. Designed for precise filtration and effectiveness with any industrial use.

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Featured Water Filters

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Bath Ball® Filter

From $64.95

4.9 (220)

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SMART Filter Cartridge

From $59.00

5.0 (176)

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Fluoride Under Sink Water Filter System

From $160.90

4.9 (27)

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Fluoride Whole House Water Filter

From $1,665.00

4.8 (17)

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Whole House Reverse Osmosis System

From $2,227.00

5.0 (6)

Explore Water Filters for Your Home

All Residential Systems

Water filtration system with a large tank against a concrete wall.

Whole House Reverse Osmosis Systems

Get pure, great-tasting water at every tap with high-capacity whole house RO systems for residential or commercial filtration.

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Water filtration system installed in a kitchen cabinet.

Under-Sink Reverse Osmosis Systems

High-performance under sink RO systems that remove fluoride, arsenic, 99% of dissolved solids, and more.

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Point of Use Water Filters

Point of use water filters designed to remove fluoride, arsenic, heavy metals, and other impurities from your tap water.

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Shower & Bath Water Filters

Reduce chlorine, chloramines, and other contaminants for softer skin, healthier hair, and a more refreshing shower.

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Under-Sink Water Filters

Under-sink water filter systems that reduce contaminants for cleaner, better-tasting water straight from your tap.

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Whole House Water Filter Systems

Advanced home water filter systems that remove chlorine, heavy metals, and more for cleaner, healthier water throughout your whole house.

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Looking for a Reverse Osmosis System?

Explore our selection of Countertop, Under Sink reverse osmosis, and Whole House RO water filtration systems.

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Need Whole Home Water Filtration?

Our Whole House Water Filter systems address a variety of different water issues including Chlorine, VOC's, Fluoride, Arsenic, Nitrates, and much more. Our systems are customizable to meet any need.

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Are you Struggling with Hard Water?

Crystal Quest Whole House Water Softeners and salt-free conditioner systems effeciently reduce scaling and address water hardness. Providing you with softer, smoother water that is pleasant to drink, use, and extends your appliances lifespans. Experience the luxury of softer, smoother water with our Whole House Water Softeners and salt-free conditioner systems, enhancing every aspect of your daily life.

Get A Water Softener Today