
Medicinal plants have wide range of uses for mankind. Like clay jugs can clean water, plants can also be used to purify water in areas where sanitation is poor. Researchers from Kerela, India have found in a scientific study that certain local plant extracts “have the wonderful capacity to purify water and our environment due to the presence of various useful biochemical contents.”
An attempt was made to check the potential of selected medicinal plants to purify water. by researchers in Kerela, India.
Water pollution is a major environmental issue in India. The largest source of water pollution in India is untreated sewage. Other sources of pollution include agricultural runoff and unregulated small-scale industry.
The present study published in the Journal of Chemical Health Risks the researchers looked at the physical, chemical and bacteriological properties of water samples treated with coriander, moringa, azadirachta (neem) and ocimum (holy basil or tulsi), and compare it with properties of well water.
Plant extracts were prepared using the leaves of selected plants and were treated with polluted water. Their physical and chemical properites presence of e.coli bacteria and others were studied after treatment and compared with that of pure water which was taken as control.

