Question

visit nearby pond/lake or rive and find out the material being discharge in it. prepare a note on it

Answer 1

If you visit a lake in rural region, you will probably see people washing clothes there and disposing the soap water in the lake itself. You will even spot people washing domestic animals in the same water, even people using it as a washroom.
If you are in a developed or developing region, you may spot pipes from various sources throwing dirty water into it. This may be from a nearby factory or a locality. There are various factors that affect our lakes and ponds. This is dangerous to be consumed.