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Reverse Osmosis:
The Purest Water

Advanced reverse osmosis systems remove 99% of contaminants for crystal-clear drinking water. Perfect for Arizona homes concerned about water quality.

How Reverse Osmosis Works

Reverse osmosis is a water purification process that uses a semipermeable membrane to remove dissolved solids, ions, and other contaminants from water. Water is forced through the membrane at high pressure, leaving behind impurities while pure water passes through to your tap.

The result is water that is 99% free of contaminants including minerals, salts, bacteria, viruses, and chemical compounds. RO systems are especially valuable in Arizona, where municipal and well water often contains elevated levels of minerals and contaminants.

99%

Contaminant Removal

Removes dissolved minerals, salts, bacteria, viruses, and chemicals from your water supply.

Under-Sink

Space-Efficient

Compact systems fit neatly under your kitchen sink, providing pure water directly at your tap.

Long Life

Reliable Performance

Properly maintained RO systems provide years of pure water with minimal maintenance required.

What RO Systems Remove

Reverse osmosis is highly effective against a wide range of contaminants.

Contaminant Type RO Removal Rate Health/Property Impact
Arsenic 95-99% Cancer, organ damage risk
Lead 95%+ Neurological damage, especially children
Fluoride 95%+ Dental fluorosis, bone effects at high levels
Nitrates 99% Methemoglobinemia (blue baby syndrome)
Calcium & Magnesium 95%+ Hard water, appliance scale buildup
Chlorine & Chloramines 99% Bad taste, odor, disinfection byproducts
Bacteria & Viruses 99.99% Gastrointestinal illness risk
Pesticides 95-99% Hormonal disruption, neurological effects
PFAS (forever chemicals) 90-99% Liver damage, thyroid disease, kidney disease

Arizona Water Quality: Your Region

Water quality varies across Arizona. Here's what we typically find in service areas.

Prescott & Prescott Valley

Typical Issues: Elevated arsenic in wells, hard water, low pH, iron oxide staining

Elevation: 5,400 ft — high-altitude water challenges

Solution: Arsenic removal + water softening + pH balancing

Sedona & Cottonwood

Typical Issues: Hard water, mineral content, altitude challenges

Elevation: 3,350 ft in Sedona

Solution: Water softening + reverse osmosis for drinking water

Chino Valley & Dewey

Typical Issues: Well water contamination, arsenic risk, high mineral content

Elevation: 4,800+ ft

Solution: Complete well testing + customized treatment

Camp Verde, Jerome & Clarkdale

Typical Issues: Mineral-rich groundwater, historical mining impacts

Elevation: 3,000–3,600 ft

Solution: Heavy-duty filtration + RO for pure water

Cornville & Rimrock

Typical Issues: Well water challenges, mineral content, iron staining

Elevation: 3,600–3,900 ft

Solution: Well treatment + whole-house system + RO

Lake Montezuma & Paulden

Typical Issues: High mineral content, arsenic potential, well variation

Elevation: 3,000–4,000 ft

Solution: Free testing to determine exact needs

FAQ

Reverse Osmosis Questions

Yes — reverse osmosis water is among the safest drinking water available. A properly installed RO system removes 95–99% of dissolved contaminants including arsenic, lead, fluoride, nitrates, PFAS, chlorine, and bacteria. RO does remove trace minerals like calcium and magnesium, but the World Health Organization confirms people get the vast majority of these from food, not water.

An under-sink reverse osmosis system in Prescott runs $350 to $1,200 installed, depending on stage count, membrane quality, and whether a dedicated faucet is included. Whole-home reverse osmosis systems range from $5,000 to $15,000+, depending on storage tank size, booster pump, and home plumbing complexity. Aqua Cat sizes the system from a $179 lab water test.

RO pre-filters (sediment and carbon) typically need replacement every 6 to 12 months. The RO membrane itself lasts 2 to 5 years depending on feed water quality. Post-filters last 1 to 2 years. Aqua Cat sets a maintenance schedule for every install and offers reminder service so the system never under-performs.

Older RO systems wasted 4 gallons for every 1 gallon of pure water. Modern systems with high-efficiency membranes and permeate pumps now produce 1 gallon of pure water for every 1 to 3 gallons of brine. The brine line drains to your home's wastewater. For an average Prescott household, that's roughly $2 to $4 per month in extra water cost.

Yes. RO water improves the taste of coffee, tea, soups, and rice because there are no off-flavors from chlorine, sulfur, or hardness minerals. Most homeowners run a line from the under-sink RO unit to the refrigerator's ice maker and water dispenser as well. Whole-home RO covers every tap, but is overkill if your only goal is drinking and cooking water.

Yes — reverse osmosis is one of the most effective methods for removing arsenic, PFAS, lead, and nitrates from well water. RO membranes reject arsenic V at 95+% and PFAS at 90–99% depending on the compound. For homes with high arsenic levels, Aqua Cat often pairs RO with a dedicated arsenic-removal cartridge upstream for redundancy. See our arsenic removal page for details.

Ready for Pure Drinking Water?

See how a reverse osmosis system can transform your home's water. Schedule your free consultation today.

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