I think the answer may be water pollution.
water pollution > Water pollution<span> is the contamination of </span>water<span> bodies (e.g. lakes, rivers, oceans, aquifers and groundwater). This form of environmental degradation occurs when </span>pollutants<span> are directly or indirectly discharged into </span>water<span> bodies without adequate treatment to remove harmful compounds.
source: Wikipedia </span>
If I remember correctly, it was because Mowgli was a human and not an animal. Plus they thought he was going to hurt them like how hunters do.
Explanation:
by knowing deeply about my problem I will deal with my problems.. or I will to try to avoid the problem if I don't have the ability to deal with them but nothing is impossible in our life so problems will also have there solution..