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Reverse osmosis units in groundwater based public water supply system in rural eastern Karnataka, India: an analysis

Srinivasan, R and Pandit, SA and Khatei, G and Karunakara, N and Kumara, KS and Riotte, J and Moger, H and David, PA and Jindal, M and Gowrisankar, G and Ramkumar, KD (2022) Reverse osmosis units in groundwater based public water supply system in rural eastern Karnataka, India: an analysis. In: Current Science, 123 (12). pp. 1493-1498.

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Official URL: https://doi.org/10.18520/cs/v123/i12/1493-1498


Adequacy, eco-friendliness and desirability of continua-tion of reverse osmosis (RO) purification of groundwater for providing safe drinking water to villages in the groundwater resource-deficient eastern Karnataka, India, have been studied in 15 villages in 4 districts of the state, where high fluoride and uranium contamination has been observed. The results indicate that: (i) except in Chitra-durga district, there are an inadequate number of RO facilities; (ii) RO water consumption is far less than the minimum amount recommended for drinking by WHO; (iii) while the benchmark of the best performance for RO membranes is >99, the RO units in use show an ave-rage fluoride and uranium rejection percentage of 92.6 and 95.1 respectively; and (iv) similar to almost all RO units, the installed ones are also wasting water in the water-deficient eastern Karnataka and discharging concentrate with a higher percentage of contaminants into the environment. Better management of RO units and RO concentrate is required. © 2022,Current Science.All Rights Reserved.

Item Type: Journal Article
Publication: Current Science
Publisher: Indian Academy of Sciences
Additional Information: The copyright for this article belongs to the Authors.
Keywords: Contaminants; Environmental friendliness; Groundwater; Reverse osmosis; Sustainable rural water supply
Department/Centre: Division of Mechanical Sciences > Divecha Centre for Climate Change
Date Deposited: 03 Feb 2023 03:49
Last Modified: 03 Feb 2023 03:49
URI: https://eprints.iisc.ac.in/id/eprint/79803

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