In the question below is given a statement followed by two courses of action numbered I and II. On the basis of the information given in the statement to be true, then decide which of the suggested courses of action logically follow(s) for pursuing.

Statement: The ground water of city Y has been found contaminated with high amounts of lead. 

Course of action:

I. Government needs to treat the contaminated water and provide water free from such impurities. 

II. Government need to find out as how water was contaminated with lead.