Domestic wastewater looks dirty but it is still mostly compr

Domestic wastewater looks dirty but it is still mostly comprised of water. The percentage of domestic wastewater that is comprised of contaminants is most nearly?

a) 25%

b) 10%

c) 1%

d) 0.01%

Solution

Option d is right Because domestic wastewater contains 99.9% of water and 0.01% of contaminat like dust,oil, soup,etc.

So option d is right