Defender Whole House Reverse Osmosis System

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Take the Not-Water Out of Your Water

Everything that doesn’t belong—gone at 0.0001 microns

Carefully Assembled in the USA

Precision-built in America with better parts, better oversight, and better support

Engineered to Waste Less, Deliver More

High-efficiency RO with built-in recycle and blending functionality

Built to Outlast. Rated for Years, Not Months

Long-life membranes, stainless steel, and smart design. Built for the long haul

Unmatched Water Quality

The Defender system can drastically reduce chemicals, bacteria, and heavy metals throughout your home. You’ll have peace of mind knowing your water is cleaner and safer from every tap.

Healthier, Better-Tasting Water

Your water will taste fresh and pure, free from unpleasant odors and flavors. Enjoy better-tasting coffee, tea, and meals without needing bottled water.

Protects Your Home and Appliances

This system reduces wear on your pipes and appliances caused by hard water and contaminants, saving you money on repairs and extending the life of your home’s infrastructure.

Complete Well Water Protection

Ideal for private wells, this system offers multi-layered protection against sediment, chemicals, and pathogens, ensuring safe, usable water throughout your home.

No Bottled Water Needed

Skip the cost, waste, and hassle. Defender delivers better-than-bottled quality from every faucet—eliminating the need for single-use plastics or countertop filters.

Laundry That Feels (and Smells) Better

RO water prevents mineral buildup in fabrics, so clothes and linens stay brighter, softer, and free from musty odors.

American Craftsmanship

Every detail of a Defender Whole-House Reverse Osmosis System is built with longevity and reliability in mind. Superior components and quality control add up to a system that you can rely on.

Built to Last

We use stainless steel reinforced fittings, a multi-stage stainless steel booster pump, and the highest quality stainless steel valves to make sure you always have clean, high-quality water.

Pre-Treatment: What Is Needed For RO Success

A reverse osmosis system can clean up a mud puddle. However, the question becomes... for how long? With proper pre-treatment, a reverse osmosis system will give you years of reliable performance and outstanding water quality.

For Homes With a Private Well

No two wells produce the same water. The chemistry can vary dramatically—from iron, manganese, and sulfur to bacteria, nitrates, and PFAS. That’s why US Water Systems follows the principle: measure twice, cut once. Before recommending a Defender™ system—or any solution—we strongly advise starting with a laboratory-grade water analysis. It’s the most responsible first step toward solving water quality issues the right way.

A Smart First Step—At No Risk to You

The cost of the Waterlogix™ test kit is fully credited toward any recommended system purchase. That means your lab-grade water analysis is essentially free when you’re ready to move forward—ensuring our solution is right the first time and allowing us to stand behind its performance with confidence.

Pre-treated water is pumped into the RO membrane at about 150 PSI

As the water moves through the wound passages in the membrane, it’s separated into two streams: Permeate = Good Water Concentrate = Waste Water

The treated water (Permeate) then flows out of the membrane through the collection tube and into the storage tank

A portion of the wastewater (Concentrate) can be recycled back to the input to improve recovery, and the small portion remaining flows harmlessly down the drain

US Water Systems’ Waterlogix ™ 4 x 40" High-Efficiency Membranes allow for industry-leading water recovery and total dissolved solids reduction

Still Have Questions?