Question

Which of the following is the most serious effect of water pollution for humans?

Answer 1

The answer is A.)  infectious diseases

Answer 2

Of course, infectious disease seems like a terrible thing to be added to a water supply, and of course it is, but in reality this only occurs rarely in modernised societies. Diseases can spread rapidly from contaminated drinking supplies - water is the most vital sustaining chemical to human life after oxygen - and must be considered the most serious effect of water pollution.