My name is Harish. I am looking into various methods for water purification in Vadamanapakkam, Tamil Nadu. This village has approximately 3500 people and the groundwater is the only water source. I have added as an attachment the test results. Some of the samples have a TDS above 2500 ppm and the total hardness >1000 ppm for CacO3. Would RO be the best solution? Is there any other cost effective method?
Thank you for your help,
Harish