A Beginners Guide To Reverse Osmosis: What You Need To Know

Reverse osmosis, also known as RO, is a natural water purification process that uses pressure and force to remove impurities from water. It’s one of the best ways to make sure your drinking water is clean and safe for consumption.

It can be confusing for the beginner, so here are some important things for you to know about reverse osmosis. From what kind of filtration system RO works with, to when it’s best to use RO filters, to how long they last, read on to learn everything you need to know before going into reverse osmosis.


What is RO?

RO is a natural water purification process that uses pressure and force to remove impurities from water. With RO, you have the capability to make sure your drinking water is clean and safe for consumption.

It’s one of the best ways to make sure your drinking water is safe and clean, so it’s a popular solution for many homes.

It can be confusing when you’re just starting out with RO filters, so we’ve compiled important information that might help you get started. Read on to learn more about the system and some things to know before using it in your home!

How does RO work?

Reverse osmosis is an ultra-filtration process that uses pressure and force to remove contaminants from water. The system works by pushing water through a semi-permeable membrane that allows the passage of water molecules, but not larger particles.

The semipermeable membrane is surrounded by a solution containing ions, which are positively charged molecules that attract the negatively charged impurities in the water. As the water passes through the membrane, it removes the impurities and provides pure, clean drinking water.

The system can also be used for wastewater treatment. RO systems are typically used at schools and hospitals or in disaster relief situations to provide drinking water for those affected by natural disasters such as hurricanes or floods.

The different types of filters used for RO

One of the most important things to know about reverse osmosis is that there are two different types of filters used for RO. There’s the cartridge filter and the membrane filter.

The cartridge filter is great for removing larger particles from your water as well as bacteria and viruses. This type of filtration system works best at removing impurities because it employs a porous carbon bed.

The membrane filter is best for removing smaller particles like chlorine, chemicals, medications, and pesticides. Because it uses a semi-permeable membrane rather than a porous carbon bed, the membrane filter can be more affordable.

Another important thing to note about these types of filters is that they can last anywhere from three to six months depending on how often they need replacing. However, during that time period they will remove up to 99 percent of all contaminants in your water supply.

When should you use RO filters?

RO filters work best when you’re using a high concentration of water. This means that it’s best to use RO filters when you have large volumes of water to purify.

If your reverse osmosis system is producing about 1,000 gallons of water each day, the RO filter should last for about 10 years. If the reverse osmosis system is producing less than 100 gallons per day, it should last for about 6-8 years.

Ideally, you want to be able to change the filter and flush out impurities every year or every six months. If this isn’t possible, it’s better to replace the filter after 3 years as well.

How long do RO filters last?

RO filters work by using water pressure and force. This is how they are able to remove impurities from your drinking water.

Typically, RO filters last anywhere between 6-18 months. It all depends on the quality of the filter, how much water you use it for, and what kind of contaminants it removes.

The lifespan of a RO filter can vary depending on a few factors. The following are some of the most common ones that affect the length of time your RO filter lasts:

– Filters made with high-quality materials will last longer than those made with low-quality materials.

– If you don’t clean or replace your filters regularly, you could possibly shorten their life span significantly.

– People who are looking to invest in a RO filter will want to choose a model that can handle higher amounts of contaminants in order to maximize the life span of their investment.


RO filters are a great way to provide clean, healthy water for your home, but they can be difficult to use. The good news is that there are various types of filters to choose from and you can usually find a filter that best suits your needs.

Meet the author: Nancy Hernández

Nancy is a yoga instructor and a knitwear designer. She has been teaching yoga since 2013 and is certified by Yoga Alliance. In her spare time, she enjoys traveling, tennis and cooking. “As a mother of three, my kids keep me busy. But spending time with them is really a treat. They are growing up so fast and I do not want to miss anything!” Learn more about Nancy and the rest of the team.