Clean & Safe Water: Reverse Osmosis Demystified
What is Reverse Osmosis?
Reverse osmosis is the method all Renewell Water filtration products use to purify your water— removing impurities and delivering 100% pure H2O to every glass.
Eliminates bacteria, viruses, and heavy metals
Removes chlorine, fluoride, and harmful chemicals
Enhances taste, odor, and clarity
How Does It Work?
Reverse osmosis forces water through a special membrane filter with miniscule pores, 1000 times smaller than one strand of hair, removing all impurities, chemicals, dissolved solids, bacteria and toxins, and giving you completely pure water.
Reverse osmosis in water purification was inspired and then modelled on a seagull’s ability to survive drinking only seawater, with scientists discovering a gland near a seagull’s eye which actively filters salt from their bloodstream and ejecting it via their nostrils.
The reverse osmosis products you buy from Renewell Water do exactly the same thing—pushing your water through a membrane modeled after the seagull gland, expelling all impurities into waste, and giving you fresh, tasty, and healthy H2O.
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Why Do We Use Reverse Osmosis?
Reverse osmosis is the most effective way of delivering you 100% pure H2O guaranteed.
Why Is a Renewell Reverse Osmosis System Better Than a Standard Filter?
You’ve probably come across “water filters” before. While they may remove a few impurities in the short term, standard filters are far less effective than a reverse osmosis system. They often let contaminants through—and most importantly, they don’t deliver 100% pure water.
What’s more, traditional filters clog easily. Once blocked, they stop functioning—sometimes making your water worse than before.
A reverse osmosis system from Renewell Water continuously filters and flushes out impurities, keeping your water clean, safe, and ready to drink all year round.
Standard Filters
- Cartridges need replacing every 2 months or less
- Can trap bacteria without regular sanitization
- Don’t remove chemicals or heavy metals
- Only reduce taste and odor—temporarily
Renewell Reverse Osmosis
- Membrane lasts up to 3 years
- Flushes away contaminants—no bacteria buildup
- Eliminates chemicals, heavy metals, bacteria & more
- Enhances taste, odor, and overall water clarity
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Frequently Asked Questions
Everything you need to know about our Reverse Osmosis systems.
Reverse osmosis is an advanced water purification method that uses a semipermeable membrane to remove impurities from water. By applying pressure, water molecules are forced through the membrane, leaving contaminants behind and producing purified water.
Our Reverse Osmosis Water Filtration Systems involve multiple stages:
- Sediment filter to trap particles like rust and dirt.
- Activated carbon filter to remove chlorine and organic chemicals.
- RO membrane to filter out dissolved solids and harmful contaminants.
- Post-filter to polish the water's taste before consumption.
RO systems can remove up to 99.99% of dissolved salts (ions), particles, colloids, organics, bacteria, heavy metals, fluoride and more.See the full list.
Yes, reverse osmosis water is safe to drink. The process removes harmful contaminants, resulting in clean and healthy drinking water.
Yes, RO systems remove most minerals. To reintroduce them, you can:
- Add an optional Re-Mineralizer Filter (€30)
- Use Mineral Drops
Sediment and carbon filters: every 12 months. RO membrane: every 2–3 years, depending on water quality and usage.
Renewell Water includes installation with all systems purchased on our website (Ireland and UK). Check availability during checkout.
Our RO systems typically flush about 1 gallon of water for every 2 gallons of purified water produced.
Yes. Renewell Water filtration systems with reverse osmosis require electricity to operate.
Both purify water, but RO is generally more efficient and practical for home use. Distillation uses more energy and time.
Yes, Renewell Water RO systems effectively remove chlorine from water.
Yes, reverse osmosis systems are effective at removing fluoride from water.
RO water can be slightly acidic due to mineral removal. However, it is mild and not harmful.
Yes, but you should test the water first. Pre-treatment may be needed to protect the RO membrane from high contaminant levels.