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Aqua tabs are are simply fixed dose chlorine tablets. To be effective the turbidity of the watter must be below 5 NTU. Unless your water is coming from protected wells you would need to filter the water. IF water is coming from surface water sources such as rivers then you would likely need to include a cosgulation/flocculation stage. For individual/household levels you could try combined treatment sachets. There are a number of proprietary brands, I think ther is a south african producer called waterguard, and a European producer called aquapur. There are likely to be a myriad of Indian producers. I suggest that you check out the Oxfam equipment catalogue at https://supplycentre.oxfam.org.uk/water-treatment-11-c.asp, which provides a comprehensive set of options, many of which are purposefully designed for deployment in a humanitarian emergency.

Regards

John