You may have heard the term, Reverse Osmosis when researching drinking water filtration systems, but what exactly is it?
Reverse Osmosis, or RO, is a water filtration process that uses pressure to force water through a semipermeable membrane.
This membrane acts like a barrier, allowing pure water to pass through while filtering out impurities and contaminants. The removed contaminants are flushed away, leaving you with clean, great-tasting drinking water.

How Effective is Reverse Osmosis?
Cost-effective and easy to maintain, Reverse Osmosis systems are a highly effective method of water filtration, capable of removing up to 99% of around 65 different contaminants. This makes them an excellent choice for households and businesses seeking reliable, clean water.
What Contaminants Does Reverse Osmosis Remove?
RO systems effectively remove many chemical contaminants, such as lead, chlorine, sodium, chromium, and copper. They can also significantly reduce levels of fluoride, calcium, magnesium, arsenic, radium, sulfate, potassium, nitrate, and phosphorus, making your water safer and healthier to drink.
How Does Reverse Osmosis Work?
RO filtration typically involves four main stages, each targeting different impurities:
- Sediment Filtration: The process begins when mains water flows through a sediment filter. This filter captures dirt, silt, and other particles, protecting the delicate RO membrane from clogging.
- Carbon Filtration: The water then flows through a carbon filter, which removes chlorine and other chemicals that can affect water taste and smell. Removing chlorine also helps prolong the life of the RO membrane.
- RO Membrane Filtration: At this stage, water reaches the RO membrane, which filters out most remaining contaminants, allowing only water molecules to pass through.
- Polishing Carbon Filter: Finally, the water passes through another carbon filter, removing any residual tastes or odours, and ensuring your water tastes as clean and refreshing as possible.

Where Can You Install an RO Unit?
Most domestic RO units are compact, making them ideal for installation under your kitchen sink or in other small spaces. Their unobtrusive design makes them a great fit for modern kitchens.

What Maintenance Does an RO System Require?
RO systems are low-maintenance, needing only a yearly service to keep them sanitized and running smoothly. During this service, the filters and membranes are typically replaced to maintain performance. Most domestic RO systems run on water pressure alone, without electricity, making them energy-efficient. Larger commercial systems may use electric pumps, though they still require minimal power. With proper maintenance, an RO system can have a lifespan of 10-15 years, making it a sound, long-term investment.
Ready for Clean, Great-Tasting Water?
Discover the benefits of Reverse Osmosis with AquaSoft UK. Contact us today for expert advice or a free consultation on the best water filtration system for your home or business. Start enjoying pure, fresh water today!
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