Reverse Osmosis Water Filtration Systems
Pure, Great-Tasting Water Right from Your Tap
At Now Plumbing, we believe your family deserves the cleanest, freshest water possible. Our Reverse Osmosis (RO) systems deliver high-quality drinking water by removing contaminants, chemicals, and impurities, leaving you with crisp, refreshing water straight from your faucet.
Pro Tip: The Real Reason Arizona Homes Need RO Water
Did you know Arizona has some of the hardest water in the entire United States? In many parts of the state, water hardness levels can exceed 300 parts per million (ppm) — over three times higher than the national average!
What Is Reverse Osmosis?
Benefits of a Reverse Osmosis System
A Reverse Osmosis system gives your home cleaner, fresher-tasting water for drinking, cooking, coffee, and tea—all while removing harmful contaminants like chlorine, lead, sediment, fluoride, and arsenic. It also saves you money by eliminating the need for pricey bottled water, and it’s an eco-friendly choice that reduces plastic waste and lowers your overall carbon footprint.
Service Locations
RO Filter Replacement Guide for Homeowners
How to Replace Your RO Filters at Home
1. Turn off the water supply
Shut off the cold-water valve under the sink.
2. Release pressure
Open the RO faucet for a few seconds to relieve pressure in the system.
3. Remove the filter housings
Use your RO wrench and twist the housings counterclockwise.
4. Take out the old filters
Remove and discard the used filters.
5. Insert the new filters
Place each new filter into the correct housing and make sure it’s seated properly.
6. Tighten the housings
Turn them clockwise until they’re snug (don’t overtighten).
7. Turn the water back on
Slowly reopen the cold-water valve.
8. Check for leaks & flush
Inspect for leaks and run the RO faucet for a few minutes to flush the system.
Changing your RO filters yourself is a quick, cost-effective way to keep your water fresh, clean, & great-tasting. Replace them every 6–12 months to prevent buildup, protect your system, and save money
If you’d prefer a professional to handle it, Now Plumbing can replace your filter for you, just call 480-802-2775.
Our RO System Options
Under-Sink RO Systems
Perfect for homes, apartments, & offices. These compact systems fit neatly under your kitchen sink and come with a dedicated faucet for purified water.
Whole-Home RO Systems
Our whole-home RO systems filter all incoming water, delivering pure water from every tap—perfect for homes with high minerals or heavy contaminants.
The Problem with Hard Water in Arizona
Hard water is full of calcium, magnesium, and other minerals that can cause buildup in your pipes, appliances, and fixtures. While these minerals aren’t harmful to your health, they can:
🚫 Leave stubborn white spots on dishes and glassware
🚫 Create scale buildup in faucets, showerheads, and plumbing lines
🚫 Reduce the lifespan and efficiency of water heaters and appliances
🚫 Give your water a cloudy appearance or bitter taste
Why an RO System is the Perfect Solution
Reverse Osmosis systems go far beyond what basic water filters or softeners can do. They remove not just the minerals that cause hardness, but also chlorine, fluoride, lead, and other contaminants that affect taste, odor, and overall water quality.
In Arizona, where hard water is a daily battle, an RO system means:
💧 Crystal-clear, great-tasting drinking water right from your tap
💧 Less scale buildup in coffee makers, kettles, and cooking pots
💧 Better tasting coffee, tea, and recipes
💧 Peace of mind knowing your water is free from harmful contaminants
Why Choose Now Plumbing?
We Provide Quality Plumbing Solutions, Now
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Customer Reviews
Very knowledgeable, responsive, and professional.!!
– Christian Appleby.
Our gas company referred us to Now Plumbing after we had contacted various plumbing services and they were unable to help. We had a great experience—they are very knowledgeable and have many years of experience. Greg and Jonathan answered all our questions and went above and beyond to accommodate and explain all of the procedures. They were upfront with pricing and provided photos and an itemized receipt, which we personally appreciate.
– Abby Kallstrom.
They did an outstanding job, very professional!
– Grace Mynes.
If I were asked to give a one-word review, the word would be ‘WOW’. Joe and Jonathan from Now Plumbing did a tremendous job. Our gas fireplace was inoperable. The problems and solutions were explained in an understandable manner. They installed a new remote-controlled starter system, replaced the existing sand with decorative stone, and cleaned the logs and grate. The furniture and flooring were protected with many coverings. They were courteous and extremely respectful of our property. Best of all, the fireplace now works perfectly. Too bad I can’t give them more than a 10!
– Bob Wittcoff.
Very knowledgeable, courteous, communicative, and keeps the work area neat. Very happy with their service. They are our plumbers for any future work we should need!!