National Green Tribunal to environment ministry: issue notification in 2 months to ban RO purifiers

The NGT had directed the Environment Ministry to issue a notice within two months on banning RO purifiers where total dissolved solids (TDS) in water as below 500 milligrams per litre.

NGT Chairperson Justice Adarsh Kumar Goel headed a bench in which he said the delay in compliance with its order is causing harm to public health and environment and it should be obeyed immediately. 

The Ministry of Environment and Forests (MoEF) has asked for four months in the execution of the order passed by the National Green Tribunal.

However, the Tribunal said, " Having regard to the fact that any steps for environmental protection have to be prompt, a period for circulation of the draft notification or inviting comments need not be so long as is proposed. The same may be reduced to two months. Let the compliance report now be filed before the next date by email."

The MoEF in its plea had said, for effective and efficient compliance of the NGT's order four months are required -- two months for wide circulation of draft notification to invite comments and two months for the incorporation of comments, finalization of notification and obtaining approval from Ministry of Law and Justice.

The matter is being listed for next hearing on March 23.

The NGT on the last date of hearing had slammed the Ministry for the delay in issuing the notification and warned the officer concerned of stopping his salary.

The tribunal had earlier said its order was based on a report of an expert committee, which also comprised a representative of the MoEF, and is implementable without permission of any other authority with penal consequences.

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In a bid to regulate the use of RO purifiers, the NGT had directed the government to prohibit them where total dissolved solids (TDS) in water are below 500 mg per litre and sensitise public about the ill-effects of demineralised water.

The tribunal has also asked the government to make it mandatory to recover more than 60 per cent water wherever RO is permitted across the country.

TDS is made up of inorganic salts as well as small amounts of organic matter. TDS levels below 300 mg per litre are considered to be excellent, while 900 mg per litre is said to be poor and above 1200 mg is unacceptable as per a WHO study.

Reverse Osmosis (RO) is a water treatment process that removes contaminants from water by using pressure to force molecules through a semipermeable membrane.

The order had come after perusing an expert committee report which said that if TDS is less than 500 milligrams per litre,  RO system will not be useful but will result in removing important minerals as well as cause undue wastage of water.

The tribunal was hearing a plea filed by NGO Friends seeking conservation of potable water by preventing its wastage on account of unnecessary use of RO systems.

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