The National Green Tribunal on Wednesday sought a response from the Centre on a plea seeking directions regarding the wastage of water caused by reverse osmosis (RO) water purifiers.
The bench issued a notice to the ministry of water resources on the plea filed by an NGO called Friends. The plea alleged that for each litre of purified water, the filter dumps three-to-four litres of waste water, resulting in wastage of up to 80 per cent of water.
The tribunal was hearing a plea filed by the NGO seeking directions to the ministry to conduct research work about the “quality” of water produced by RO as compared to natural water. The plea said that manufacturers are attracting consumers using marketing strategies while simultaneously contaminating water sources.
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The plea, filed through advocate Sugriva Dubey, sought “effective and centralised” water purification system covering housing clusters in rural and urban areas so that the demand for water purifiers gets reduced automatically”.
“The RO system was originally invented to create potable water from otherwise unusable sea water and was never meant for filtering ground water. At present lakhs of people are buying RO systems, meaning that lakhs of people will waste around 80 per cent of potable water,” the plea said.
Meanwhile, the NGT has ordered a crackdown of ilegal borewells being operated by the water mafia in Vasant Vihar.
“We direct the SDM, Vasant Vihar to seal all the water borewells which are operating illegally, unauthorisedly without permission from the Central Ground Water Authority and are running the water mafia in that area (Vasant Kunj Enclave),” the NGT said, in its order.
The SDM Vasant Vihar had made a submission to the NGT claiming that there are 20-22 illegal borewells being operated in the area and “they are being run by the water mafia for selling water at very high charge”.
However directions for sealing only five borewells had been been issued. It was also submitted to the NGT that the area doesn’t have rainwater harvesting systems and “onsequently the ground water levels are depleting”. It also directed Delhi Jal Board to ensure that potable water should be provided to the colony in discharge of their public obligation.