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Reverse Osmosis Drinking Water Systems for Phoenix AZ

Reverse osmosis systems that deliver bottled-water quality from a dedicated kitchen faucet without the plastic waste.

Pure Drinking Water

Bottled Water Quality, From Your Tap

A reverse osmosis system uses a semi-permeable membrane to remove dissolved solids, chlorine, lead, fluoride, and just about everything else that doesn't belong in water. The result: clean, great-tasting water on demand from a dedicated faucet at your kitchen sink.

We offer both tankless on-demand and traditional tank-style systems. Click a system below to see details and photos.

AlkaPro 800 Tankless RO

Our flagship drinking water system. Compact, tankless, on-demand and it remineralizes the water after filtration so it tastes clean and fresh rather than flat.

How It Works

Water is pushed through a series of pre-filters that remove sediment and chlorine, then through a high-flux 800 GPD reverse osmosis membrane with pores so small they block dissolved contaminants at the molecular level. After the membrane, a post-carbon polish filter removes any remaining taste compounds. Finally, a remineralization stage adds beneficial calcium and magnesium back in at controlled levels, giving the water a clean, slightly mineralized taste. Because there is no storage tank, water is produced on demand and delivered immediately through the dedicated faucet.

Top 3 Contaminants Removed

Dissolved Solids (TDS)Chlorine & ChloraminesLead & Heavy Metals

System Features

  • 800 GPD Tankless Reverse Osmosis Membrane
  • Color-Match Faucet in 5 Finishes
  • Quick Connect Fittings
  • Smart Filter Monitoring
  • Remineralization Stage for Great Taste
  • 1-Year Limited Warranty
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5-Stage Reverse Osmosis

The proven classic. Five stages of filtration, a pressurized storage tank, and a dedicated kitchen faucet deliver purified drinking water on demand at a lower upfront cost.

How It Works

Stage 1 is a sediment pre-filter that removes sand, silt, and rust. Stage 2 and 3 are activated carbon block filters that remove chlorine, chloramines, and volatile organic compounds that would otherwise damage the membrane. Stage 4 is the reverse osmosis membrane water is forced through under pressure, blocking up to 99 percent of dissolved solids. Stage 5 is a post-carbon polish filter that refines taste before the water flows into the pressurized storage tank and out through the dedicated faucet.

Top 3 Contaminants Removed

Dissolved Solids (TDS)FluorideNitrates & Chlorine

System Features

  • 5-Stage Advanced Filtration System
  • Activated Carbon Pre-Filters (2 Stages)
  • High-Rejection RO Membrane
  • Dedicated Drinking Water Faucet Included
  • Pressurized Storage Tank
  • 1-Year Limited Warranty
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Faucet Options

Match Your Kitchen

Your RO system includes a dedicated faucet. We offer five finishes so it blends right in with your existing kitchen fixtures.

Brushed Nickel
Chrome
Brushed Gold
Matte Black
Oil-Rubbed Bronze
Pairs Best With

Better With a Whole-Home Softener

RO membranes work harder against hard water. Pairing a drinking water system with a whole-home softener extends membrane life, improves filtration efficiency, and protects every fixture in the house not just the kitchen faucet. Most customers install both in a single visit.

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FAQ

Drinking Water System Questions

Phoenix tap water is safe to drink but contains high levels of dissolved solids, chlorine byproducts, and residual minerals that affect taste and long-term health concerns. An RO system removes up to 99 percent of those contaminants and is the most thorough way to purify the water your family drinks and cooks with every day.

The AlkaPro 800 is tankless, meaning it produces purified water on demand with no storage tank under the sink. It also remineralizes the water after filtration so it tastes clean rather than flat. The 5-Stage system stores filtered water in a pressurized tank and is the proven, lower-cost option. Both are excellent for Phoenix homes. The AlkaPro 800 is our most popular choice.

They do different jobs. A whole home softener treats every tap in the house, protecting your plumbing, appliances, showerheads, and water heater from scale. The RO system only purifies the water at the kitchen faucet. Most Phoenix homeowners benefit from having both, and pairing them also protects the RO membrane from hard water damage, extending its life.

Yes. We can run a feed line from the RO system to your refrigerator as part of the installation so your ice and water dispenser also get purified water.

Pre-filters need annual replacement. The RO membrane typically lasts 2 to 3 years. The post-carbon polish filter is replaced annually. Louis Water Co offers a maintenance subscription for 29 dollars per month that delivers salt six times a year and replaces your RO filters once a year. If you prefer to handle it separately, filter replacement is available directly from us for 150 dollars.

We offer five finishes to match your existing kitchen fixtures: Brushed Nickel, Chrome, Brushed Gold, Matte Black, and Oil-Rubbed Bronze.

The AlkaPro 800 tankless system has a very small footprint, roughly the size of a thick book mounted to the cabinet wall. The 5-Stage tank-style system takes up about the same space as a small bucket. The dedicated faucet installs in an existing hole on your sink or we drill a new one.

Yes, noticeably better. Phoenix tap water has a flat or slightly chemical taste from dissolved minerals and chlorine. An RO system removes those entirely. The AlkaPro 800 adds trace beneficial minerals back in after filtration, giving the water a clean, slightly fresh taste similar to quality bottled water.

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