Is RO Water Healthy for You?
Is your RO water truly healthy? Explore the pros and cons of Reverse Osmosis (RO) purified water, including mineral depletion, potential health impacts, and how to ensure your drinking water is balanced and safe.
Written by Dr. Rohinipriyanka Pondugula
Reviewed by Dr. J T Hema Pratima MBBS
Last updated on 24th Jul, 2025
Introduction
Water is essential for life, and having access to clean, safe drinking water is crucial for good health. In recent years, Reverse Osmosis (RO) water purifiers have gained popularity as an effective way to remove impurities from water. But is RO water truly healthy for you? Let’s explore the benefits, drawbacks, and what you should consider before relying on RO water.
What is RO Water?
Reverse Osmosis (RO) is a water purification process that removes contaminants by forcing water through a semipermeable membrane. This membrane filters out dissolved salts, heavy metals, bacteria, viruses, and other impurities, providing clean and safe drinking water.
How Does RO Work?
The way RO work is:
1. Pre-Filtration – Removes large particles like dirt and sediments.
2. Carbon Filtration – Eliminates chlorine and organic compounds.
3. RO Membrane – Filters out dissolved impurities, including lead, arsenic, and fluoride.
4. Post-Filtration – A final carbon filter improves taste and removes any remaining odors.
5. Mineralization (Optional) – Some RO systems add essential minerals back into the water.
Benefits of RO Water
Benefits of RO water are:
1. Removes Harmful Contaminants
- RO systems effectively eliminate:
- Heavy metals (lead, arsenic, mercury)
- Bacteria and viruses
- Pesticides and chemicals
- Excessive salts (TDS – Total Dissolved Solids)
2. Improves Taste and Odor
By removing chlorine and other impurities, RO water often tastes better than tap or untreated water.
3. Safe for People with Weak Immunity
Since RO water is free from harmful microorganisms, it’s a good option for individuals with compromised immune systems, such as cancer patients or those with chronic illnesses.
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Potential Drawbacks of RO Water
- The potential drawbacks of RO water are:
1. Removes Essential Minerals
RO filtration removes not just harmful substances but also beneficial minerals like calcium, magnesium, and potassium, which are important for bone health, muscle function, and metabolism.
2. May Lead to Mineral Deficiency
Long term consumption of demineralized water may contribute to deficiencies, especially if your diet lacks these essential minerals.
3. Acidic pH Level
RO water can be slightly acidic (pH below 7), which some believe may affect digestion and overall health, though more research is needed.
4. Wastes Water
RO systems typically waste 2-3 liters of water for every liter purified, which can be a concern in water-scarce areas.
How to Make RO Water Healthier?
If you use an RO purifier, consider these tips to maintain mineral balance:
1. Choose a Mineral-Enhancing RO System
Some modern RO purifiers come with a mineralizer that adds back essential minerals like calcium and magnesium.
2. Eat a Mineral-Rich Diet
Include foods like:
Calcium – Dairy, leafy greens, almonds
Magnesium – Nuts, seeds, whole grains
Potassium – Bananas, potatoes, beans
3. Use a pH Booster (Alkaline Filter)
If concerned about acidity, opt for an alkaline water filter or add a pinch of Himalayan pink salt to balance pH.
4. Stay Hydrated with Alternatives
Occasionally drink natural mineral water, coconut water, or herbal teas to supplement minerals.
Who Should Be Cautious with RO Water?
Ones to be cautious with RO water are:
- People with mineral deficiencies – If you have low calcium or magnesium levels, consult a doctor before relying solely on RO water.
Children and elderly – They need adequate minerals for growth and bone health. - Athletes and active individuals – They lose minerals through sweat and need proper replenishment.
When is RO Water the Best Choice?
RO water is highly recommended if:
- Your tap water has high TDS (above 500 ppm).
- There’s a risk of heavy metal contamination (lead, arsenic).
- You live in an area with poor water quality or frequent bacterial contamination.
Should You Switch to RO Water?
If your tap water is safe and tested (low in harmful contaminants), a simple carbon filter may suffice. However, if you’re unsure about water quality, an RO purifier can be a reliable choice—just ensure you compensate for lost minerals through diet or a mineralizer.
Need a Water Quality Test?
If you're unsure about your water’s safety, consider getting it tested. You can book a water quality test or consult a nutritionist through Apollo 24|7 for personalized advice.
Final Thoughts
RO water is an excellent solution for removing dangerous contaminants, but it’s important to be mindful of mineral loss. By choosing the right RO system and maintaining a balanced diet, you can enjoy clean, safe water without compromising your health. Would you like to check if your RO system is right for you? Schedule a consultation with a health expert today on Apollo 24|7!
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Consult a Top Nutritionist
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Consult a Top Nutritionist
Dr. Bhukya Pavan Kalyan
General Physician
5 Years • MBBS DNB Paediatrics
Bengaluru
PRESTIGE SHANTHINIKETAN - SOCIETY CLINIC, Bengaluru
Dr. Ramalinga Reddy
General Physician
5 Years • MBBS MD General medicine
Bengaluru
PRESTIGE SHANTHINIKETAN - SOCIETY CLINIC, Bengaluru
Dt. Ila Sharma
Clinical Nutritionist
18 Years • Master in food & Nutrition
Gurugram
VIPUL GREENS - SOCIETY CLINIC, Gurugram
Dr Sumanth R
General Physician
2 Years • MBBS
Bengaluru
PRESTIGE SHANTHINIKETAN - SOCIETY CLINIC, Bengaluru
Mrs Sneha P V
Nutritionist
10 Years • Master of science in Food and Nutrition
Bengaluru
Apollo Clinic, Sarjapur Road, Bengaluru
