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Financing As Low As 0% APR

Complete Water Systems LLC Business Logo

Complete Water Systems LLC

Trusted Water Treatment and Plumbing Experts in Arizona

Licensed / Bonded / Insured ROC #330440 & 345865

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Licensed Reverse Osmosis Installation for Arizona Homes

We install, service, and maintain 3 to 7 stage drinking water filtration systems — so you never have to worry about water quality again.

25+ Years of Experience

Family-Owned Business

Industry Leading Warranties

Best Price Guaranteed

Licensed, Bonded, and Insured

The Complete Water Systems Difference

We don’t just install your reverse osmosis system, we service, protect, and maintain it so your water stays clean for years.

Professional Installation & Protection

  • Licensed under-the-sink RO installation

  • Free haul-away of old systems

  • Leak detection & automatic shut-off

Ongoing Service & Maintenance

  • Filter changes & membrane replacements

  • System sanitation & performance checks

  • Tank upgrades and component replacements

 

Certified Quality & Safety

  • NSF/ANSI-certified components and media

  • Designed for Arizona water conditions

  • Optional alkaline and UV upgrades available

What Your Neighbors Say About Us

Trusted by Thousands of Arizona Homeowners

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Yelp 5 Star Rating Icon
Facebook 5 Star Rating Icon
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Under-The-Sink Reverse Osmosis Systems

Multiple System Options to Match Your Water Quality & Household Needs — Installed by Arizona Experts

Faucet Selection

Standard under sink installation is included,  drilling a faucet hole is additional $100.00

103 Style Faucet

103 Style Faucet

103 Chrome – Default Included Option

103 Brush Nickel - Optional 

905 Brushed Nickel Reverse Osmosis Faucet

905 Style Faucet - $75

905 Chrome

905 Brush Nickel

905 Black

905 White

905 Antique Bronze

905 Oil Rubbed Bronze

905 Matte Black

888 Style Faucet

888 Style Faucet - $85

888 Chrome

888 Brush Nickel

888 Antique Bronze ($110)

888 Matte Black

603 Style Reverse Osmosis Faucet

603 Style Faucet - $75

603 Chrome

603 Brush Nickel

603 White

603 Antique Bronze

603 Oil Rubbed Bronze

703 Style Faucet

703 Style Faucet - $85

603 Chrome

603 Brush Nickel

603 White

603 Antique Bronze

603 Oil Rubbed Bronze

Faucet Finishes

Available Faucet Finishes

Reverse Osmosis Installation

Why Choose Us?

Trusted for 25+ YearsFamily-owned and serving Arizona with expert water filtration solutions.

Pure, Great-Tasting WaterHigh-quality reverse osmosis systems for clean, contaminant-free water.

Licensed & Insured Technicians Professional installation with guaranteed reliability.

Installed Price Locked In – Know your final installed cost before we schedule, backed by our best price guarantee.

Easy Financing AvailableFlexible plans (3 to 60 months, 0%–35.9% APR) so you can pay in installments. Call us to learn more!

Frequently Asked Questions

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Start Your Home's Water Transformation - Call Us or Get a Free Estimate Today!

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We've Got You Covered

We proudly serve all of Arizona with expert water filtration and plumbing services. From Phoenix to every corner of the state, we're here to ensure you have clean, safe water whenever you need it.

North Phoenix Area

Anthem

New River

Carefree

Cave Creek

Glendale

Paradise Valley

Peoria

Phoenix

Scottsdale

South Phoenix Area

Avondale

Chandler

Guadalupe

Queen Creek

San Tan Valley

Sun Lakes

Tempe

West Phoenix Area

Buckeye

El Mirage

Goodyear

Litchfield Park

Morristown

Sun City

Sun City West

Surprise

Tolleson

Youngtown

East Phoenix Area

Apache Junction

Fountain Hills

Gilbert

Mesa

Rio Verde

Others with Dispatch Fee

Casa Grande

Dewey-Humboldt

Eloy

Florence

Maricopa

Prescott

Prescott Valley

Sedona

Wickenburg

Gold Canyon

Flagstaff

Payson

Coolidge

Licensed / Bonded / Insured ROC #330440 & 345865, © 2026 Complete Water Systems LLC,

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