Advanced reverse osmosis systems remove 99% of contaminants for crystal-clear drinking water. Perfect for Arizona homes concerned about water quality.
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.
Removes dissolved minerals, salts, bacteria, viruses, and chemicals from your water supply.
Compact systems fit neatly under your kitchen sink, providing pure water directly at your tap.
Properly maintained RO systems provide years of pure water with minimal maintenance required.
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 |
Water quality varies across Arizona. Here's what we typically find in service areas.
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
Typical Issues: Hard water, mineral content, altitude challenges
Elevation: 3,350 ft in Sedona
Solution: Water softening + reverse osmosis for drinking water
Typical Issues: Well water contamination, arsenic risk, high mineral content
Elevation: 4,800+ ft
Solution: Complete well testing + customized treatment
Typical Issues: Mineral-rich groundwater, historical mining impacts
Elevation: 3,000–3,600 ft
Solution: Heavy-duty filtration + RO for pure water
Typical Issues: Well water challenges, mineral content, iron staining
Elevation: 3,600–3,900 ft
Solution: Well treatment + whole-house system + RO
Typical Issues: High mineral content, arsenic potential, well variation
Elevation: 3,000–4,000 ft
Solution: Free testing to determine exact needs
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.
See how a reverse osmosis system can transform your home's water. Schedule your free consultation today.