National Green Tribunal of India does not recommend RO if water contains TDS < or= 500 ppm. TDS based recommendation for determining the need for RO is what is being contested. Example: If water contains Arsenic 18micro grams per litr, Chromium > 2 micro gramper litr and Strontium >7mg/litr, water becomes unfit for human consumption even if TDS does not exceed 500ppm necessitating using domestic RO unit. UDayashankar

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National Green Tribunal of India does not recommend RO if water contains TDS < or= 500 ppm. TDS based recommendation for determining the need for RO is what is being contested. Example: If water contains Arsenic 18micro grams per litr, Chromium > 2 micro gramper litr and Strontium >7mg/litr, water becomes unfit for human consumption even if TDS does not exceed 500ppm necessitating using domestic RO unit.

UDayashankar