Reverse osmosis or RO water filters have become ubiquitous, from bustling metropolises to remote villages. People rely on them for a supply of pure and healthy drinking water. Advertisements and persuasive sales representatives have played a crucial role in establishing trust in these systems. However, as the saying goes, “all that glitters is not gold,” and the widespread use of RO systems raises critical questions about their efficiency and environmental impact.
Humongous water wastage
RO purifiers undeniably deliver on their promise of providing purified water. But the environmental cost associated with their operation is substantial. On average, these purifiers waste approximately three times the amount of water they purify. In simpler terms, for every liter of purified water, an RO system discards three liters. This leads to a significant loss of this precious resource.
Is RO filtration actually required?
This raises an essential question. Is the excessive use of RO systems justified when most Indians have access to water that already meets the safety standards set by the World Health Organization? Dr. Sambuddha Misra, an Assistant Professor at the Indian Institute of Science Bangalore (IISc), has conducted extensive research on this topic. He argues that in many cases, the water doesn’t need to undergo RO treatment.
Dr. Misra’s studies have shown that most water sources contain metal concentrations well below WHO’s recommended levels for safe drinking water. While bacterial contamination may be present, there is no need for RO systems to purify such water. In fact, utilizing RO purifiers for this purpose results in wasting seven liters of water for every ten liters processed. This contributes to increased pollution in groundwater and sewage lines. In 2021-22, Dr. Misra and his team conducted research in Haldia, West Bengal. The research revealed that metal concentrations, including lead, were lower than previously assumed. This challenges the current practice of subjecting all water to RO treatment. The study suggests adopting localized solutions to address specific water quality requirements in different areas.
Stripping of minerals from drinking water
The Environmental impact of RO filters
In short, RO water purifiers have been marketed as a panacea for clean drinking water. However, their excessive use raises environmental concerns and may not be justified in areas where water quality already meets established safety standards.
A more localized and context-specific approach to water purification is needed to minimize wastage, preserve essential minerals, and ensure access to clean and sustainable drinking water. Boiling water remains a practical and cost-effective option for many communities to achieve safe drinking water.
Doulton Water filters are not only efficient in terms of water wastage and power consumption, but also are highly sustainable. Explore wonderful online and offline festive deals from Doulton.
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If your water source is borewell/tanker etc with TDS above 500 ppm, we do not recommend Doulton Water Filters.
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