Reverse Osmosis Water Filter Systems in Wisconsin
Pure, Great-Tasting Drinking Water for Your Home
At Guthrie & Frey Water Conditioning, we install and service high-quality reverse osmosis water filter systems that deliver clean, refreshing water straight from your tap. Whether your home uses municipal or well water, our advanced reverse osmosis (RO) systems remove impurities and improve taste.
We aim to give your family peace of mind regarding your water supply. To learn more about what an RO system installation can do for you, contact us today!
Benefits of a Reverse Osmosis Water Filter System
- Cleaner Water: Reverse osmosis systems remove harmful contaminants like arsenic, lead, nitrates, fluoride, and PFAS (“forever chemicals”).
- Better Tasting Drinking Water: Say goodbye to chlorine taste, sediment, and unpleasant odors. Enjoy crisp, clear water every day.
- Save Money: Skip bottled water, save on costs, and enjoy the convenience of getting pure drinking water right from your kitchen sink.
- Low Maintenance: Our RO systems are designed for easy maintenance and cleaning.
If you’re interested in a whole-home drinking water system, reach out to our experts. Since 1974, our family-run company has been helping Wisconsin residents enjoy high-quality water. Whether you rely on a well or a municipal system, we can install the ideal treatment system for your needs.
How Reverse Osmosis Works
A reverse osmosis water filtration system uses multiple stages of filtration to purify water. Each component plays an important role:
- Prefilter: Removes sediment, silt, rust, and chlorine to protect the RO membrane.
- Reverse Osmosis Membrane: The system’s heart, this semipermeable membrane filters out up to 99% of dissolved solids.
- Post Filter: A carbon filter polishes the water, removing any lingering taste or odor before storage.
- Storage Tank: Your clean water goes into a storage tank until it’s ready for use.
- Polishing Filter: Before reaching your faucet, the water passes through one final carbon filter for optimal taste and quality.
Our RO systems are tested to NSF/ANSI Standard 58, verifying effective reduction of:
- Nitrates – 80%
- Lead – 98%
- Arsenic (pentavalent) – 98%
- Cysts (Crypto/Giardia) – 99.99%
- Fluoride – 95%
- Radium – 80%
- Total Dissolved Solids (TDS) – 93%
Model MRO-35 Manual
Model MRO-35 Performance Data Sheet
Millennium Drinking Water System Brochure
Our Reverse Osmosis System Services
Reverse Osmosis System Installation
Our certified technicians handle every step of your RO filter system installation with precision and care. We start with a water test to identify what is in your water supply. Then, we’ll install your new system neatly under your kitchen sink, in a basement, or in another convenient location. After setup, we’ll test your water quality again to ensure your system performs at peak efficiency from day one.
Reverse Osmosis Maintenance & Filter Replacement
Proper RO system maintenance ensures long-lasting performance. Guthrie & Frey makes it easy with flexible service options and replacement filters shipped right to your home.
- Replace pre- and post-filters every 6–12 months
- Replace the membrane every 2–5 years (depending on water quality)
- Use our optional quality monitor to know exactly when service is due
Need a reverse osmosis water filter replacement? Order filters online, or schedule an appointment for regular maintenance with our technicians. We also offer fast, reliable reverse osmosis system repairs, so you never have to wait on clean water.
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Ask an Expert About Reverse Osmosis
Why filter your water with reverse osmosis?
Tap water can contain minerals, chemicals, and other impurities that affect taste and quality. A reverse osmosis filter system removes these unwanted elements, producing clean, crisp water that’s perfect for drinking and cooking.
What water problems can reverse osmosis fix?
Reverse osmosis systems solve many common water issues for Wisconsin homeowners, including:
- Chlorine taste and odor from municipal water
- High levels of TDS that affect water clarity and taste
- Contaminants like lead, nitrates, and arsenic
- PFAS and other emerging contaminants found in groundwater
With an RO system, you can enjoy clean drinking water for you, your family, and your pets.
Why choose Guthrie & Frey for reverse osmosis water system installation?
For more than 50 years, Guthrie & Frey has been a trusted name in water treatment throughout Southeastern Wisconsin. From RO system installations to ongoing maintenance and RO system repair, our experienced team helps keep your drinking water clean and fresh.
We also offer:
- Professional water quality testing to identify your specific needs
- Custom water treatment services for well water and city water
- Water softener salt delivery and full-service maintenance
Have a different question for us? Contact our water treatment experts today— we’re always happy to help you find the best solution!
Reverse Osmosis in Wisconsin
Don’t Just Take Our Word For It
“This company has the best customer service!!! They have done several projects for us including RO and water softner. They had to come back to help us with an issue which they quickly scheduled and took care of. I couldn’t be happier with the service. Thank you!”
Katie G.
“On time, reviewed salt needs, changed RO filter, friendly, carried salt to our destination. Thank You.”