Concerns over the health impact of excessively purified drinking water are gaining attention after experts warned that reverse osmosis (RO) systems may remove essential minerals needed by the human body. Health specialists and water researchers say that while RO purifiers effectively eliminate harmful contaminants, extremely low Total Dissolved Solids (TDS) levels in treated water may also strip away beneficial nutrients such as calcium and magnesium.
According to water technology experts, treated drinking water should ideally maintain a TDS level between 200 and 250 milligrams per litre to ensure it retains essential minerals required for healthy bodily functions. Scientists say the growing preference for “crystal clear” water has created a misconception that lower TDS always means healthier water.
RO Purifiers Remove Both Harmful and Beneficial Elements
RO purification technology is designed to filter bacteria, viruses, heavy metals and toxic impurities from water. However, experts explain that the same process can also remove naturally occurring minerals important for bones, muscles, heart health and metabolism.
Medical professionals warn that consuming mineral-deficient water for long periods may contribute to fatigue, muscle weakness, low immunity and mineral imbalance. Some researchers have also linked prolonged intake of extremely low-TDS water with bone-related health concerns.
WHO and Experts Recommend Balanced Mineral Levels
Health experts point out that the World Health Organization (WHO) has previously highlighted the importance of maintaining minerals like calcium and magnesium in drinking water. These minerals support nerve function, muscle movement and overall metabolic balance.
Doctors emphasize that purified water should not become “empty water.” Instead, treated water should maintain a healthy balance where harmful contaminants are removed without eliminating all beneficial dissolved solids.
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Growing Concern Over Urban Water Consumption
The discussion around RO water safety is becoming increasingly important in urban India, where millions of households depend heavily on water purifiers due to fears over contamination and poor municipal water quality.
Experts say many consumers are unaware of their purifier’s TDS output or whether mineral controllers are functioning properly. They recommend regular water testing and choosing purification systems based on local water quality instead of blindly opting for maximum filtration.
Need for Awareness and Smarter Water Use
Public health specialists believe awareness around safe drinking water standards remains limited. They advise consumers to understand that clean water is not necessarily water with zero minerals.
Experts suggest maintaining balanced TDS levels, using purifiers only when necessary and ensuring regular maintenance of filtration systems. As concerns around water quality continue rising, specialists stress that the goal should be safe and mineral-balanced drinking water rather than excessively purified water alone.
