Choosing A Reverse Osmosis System

If you want to remove pollutants, harmful chemicals, and other contaminants from your drinking water, a reverse osmosis (RO) water filtration system is the solution. RO systems are the most effective at filtering away things like heavy metals, bacteria, dirt, copper, and calcium to leave you with fresh, pure drinking water. But, with so many options available, choosing a reverse osmosis system can be a challenge. 

What Is A Reverse Osmosis System? 

A Reverse Osmosis water filtration system treats water by removing pollutants and harmful chemicals using pressure. The pressure forces water through a semipermeable membrane that filters out contaminants and leaves behind fresh, clean drinking water. Other water purification systems simply trap contaminants inside a filter. A reverse osmosis system is different because it flushes impurities away using various filters instead of trapping them inside, giving you purely clean water. 


There are two types of RO systems:

  • Point of Entry (POE): A point of entry RO system treats water at the point where water enters your home, usually the main water line.
  • Point of Use (POU): POU RO systems treat water at the point of service or point of use. They are typically located on a kitchen sink, shower, washer, or refrigerator.

How Big of A Reverse Osmosis System Do I Need? 

Reverse Osmosis water filtration systems come in three standard sizes: 50 gallons, 80 gallons, and 100 gallons. The size of your system depends on the number of people in your household and the amount of water you regularly use. For a small household of one to two people who use regular amounts of water, a 50-gallon tank is okay. Larger households with higher water usage will need to size up. 

Factors to Consider When Choosing a Reverse Osmosis System 

There are a variety of reverse osmosis systems out there, so you need to make sure you do your work and pick the best one for your needs. Here are some things you should consider: 

  • Cost. Cost varies depending on the type of reverse osmosis system that you choose.  A whole-home (POE) RO water filtration system can cost between $1500 and $7,000 to install. A point-of-use RO system costs much less and normally runs between $200 and $1,000. 
  • Installation. You’ll need the help of a professional to install your RO system. But, some systems are more complicated to install. A more complex installation means money that you have to pay to installation experts. 
  • Lifespan. A reverse osmosis system is a big investment. You should make sure that it’s worth the money by checking out the specs on the lifetime of each system that you’re considering.  
  • Water Waste. RO systems go through several gallons of water to give you the purest and cleanest drinking water possible. Unfortunately, that means that a lot of water is wasted. But, some systems are more efficient at purifying water than others.  

Get A Free Estimate on RO System Installation 

Phend Plumbing is your local plumbing specialist in the Phoenix Valley area. With offices in Mesa-Phoenix and Gilbert, Arizona, our family-owned business has years of experience helping homeowners and businesses with all their plumbing needs. We offer up-front pricing and fast, professional work. Give us a call at 480-388-6093 or contact us online to get a free estimate on your next plumbing project today.