Wastewater

How is the blackish-brown oily and lathery water that goes down the drain termed as? (Clean water / Wastewater)

What is the contamination of water by harmful substances and germs etc. called?

Water pollution is caused by human excreta.

Wastewater is transparent, colourless and odourless.

The black-brown oily and lathery water that goes down the drain of a house is called _____.

Which of the following is not a water pollutant?

Define: Wastewater

Pick the odd one out giving reasons:

Used tea leaves, Sanitary towels, Organic solvents, Used cotton

Name two wastes which make water polluted.

Why is the wastewater not used for drinking and cooking?

 What are the substances that cause water pollution called?