Forget the insanity of filling up jugs of water at the store and the expense of bottled water. There is a better, more affordable and convenient way to have crystal clear, great tasting water in your Phoenix home. And here is a dirty little secret….. Most bottled water you find at the store is the same Reverse Osmosis water you can get right from the convenience of your own home just by installing a Reverse Osmosis filtration system commonly referred to as an R.O. system.

Reverse Osmosis water has that same bottled water taste, but right from the convenience of your kitchen. Water treated by filtration and reverse osmosis is great for improving the taste of drinking water, coffee, tea, soups, sauces and improving the clarity of ice cubes..your bourbon will thank you.

Using filtered water instead of tap water can help with other things as well. The water you use in your humidifiers, iron, and other appliances can benefit from filtered water.

Some of the common things the are removed with an R.O. system include

Chlorine and Chloramine
Nitrates and Sulfates

And that’s not everything!

There are two main reverse osmosis options – 3 Stage and 5 Stage

Here is how a 3 stage Reverse Osmosis works:

Step 1 – Sediment Filter (filters down to 30 Microns*)

There is a Sediment filter or pre-filter that the water goes into first. This filter removes large particles, like silt, rust and scale, and dirt. This extends the life of the system and allows the next phase of the system to focus on smaller particles in the water.

Step 2 – Carbon Filtration (̳½ of a Micron)

Once the water has gone through the first filter it passes through an activated carbon filter which is responsible for removing chlorine, odd tastes, and odors from your water

Step 3 – Membrane

The next phase of a 3-stage reverse osmosis is the membrane, and that’s where the real magic happens. The membrane is responsible for removing the small particles that couldn’t be caught by the filter. Another fun fact, the more you use the membrane the more water it can process in its life time.

The process is a simple and straightforward filtration process. It is accomplished by water pressure pushing tap water through a semipermeable membrane to remove impurities from water. This is a process in which dissolved inorganic solids (such as salts) are removed from a solution (such as water).


After the water has made its way through the 3 phases the pressure has been dropped dramatically and would take several minutes to fill a glass. For this reason, the system requires a storage tank. The typical storage tank will hold roughly 2-4 gallons of water total and will have a bladder (pressured to 5-7 psi) that pushes back and allows for 1-2 gallons to be used before the pressure drops back down. The tank will automatically start pressurizing as water is used restoring usable capacity.

The average Reverse Osmosis system can produce up to 50 gallons of water in a day, but if by chance you need more than that you can get systems that can handle upwards of 100 gallons a day. These options are great for small businesses. 

Here is how a 5-Stage system works

A 5-stage system works the same as the 3-stage however it utilizes a 2nd carbon filter for better chlorine removal which is helpful in larger municipalities that tend too have a higher chlorine content in their water. The 5-stage also has a post filter that is installed inline to the spout that is also referred to as a polishing filter. This filter offers that last chance to remove any remaining taste and/or odor and ensures the cleanest best tasting water possible. For the price difference Robins Plumbing always recommends the 5-stage over a basic 3-stage.

So, let’s talk numbers because we both know that’s what really matters.

Average cost to own for 10 years

Professionally installed and maintained annually = $2646.50 which comes to $.72 per day

Professionally installed and DIY maintained for 10 years = $1101.11 which comes to $.30 per day

Basic capacity = 2500 gallons / year or per set of filters = 6.849 gallons / day. Enough for 51+ bottles of a standard 16.9 oz or 500 ml size that’s less than 2 pennies per bottle at the professionally maintained and less than 1 penny for DIY maintenance.

So, cook, drink, make beverages and ice, and still bottle more water if you want to. The more you use it the more you are saving!