1. Folding Saris to Filter Cholera-Contaminated Water
<a href="https://www.nytimes.com/2011/09/27/health/27sari.html" target="_blank" rel="nofollow noopener noreferrer">Small Fixes: Folding Saris to Filter Cholera-Contaminated Water - The New York Times</a>
2. Sari cloth can filter cholera from water, research shows
<a href="https://www.fic.nih.gov/News/GlobalHealthMatters/january-february-2015/Pages/nursing-cholera-sari-water-filter.aspx" target="_blank" rel="nofollow noopener noreferrer">Sari cloth can filter cholera from water, research shows - Fogarty International Center @ NIH</a>
This is a really low cost method to minimise water borne problems. The science behind this seems to be that a well washed cotton fabric gets a sort of dense fibre matrix that traps bacteria, which tend to attach themselves to microscopic matter in water. These along with the bacteria get entangled in the cotton fire.
Later the fabric is rinsed in water and sun dried, which gets rid of the contamination and can be reused. There is nothing specific about a saree.  Regular white cotton  cloth with a similar thread count and weave should work.
You can set up a project where you get some cotton fabric material , wash and dry it a number of times and keep ready. Assuming you have some suitable microbiology lab accessible either in the university/college or in town, you can produce a input water sample contaminated with a known non-pathogenic bacteria (any microbiology department will tell you about suitable ones), filter this through four layers of the fabric and check the bacterial contamination level of the input and output.
If you want to consider this for your project, we can discuss this further. to work out details.