With respect to Water Pollution, Cause, Effects and Mitigation measures of Pesticides

Causes:
Pesticides used in agriculture get mixed in water sources and act as pollutant. In addition to use of pesticides in agriculture, silvi culture also makes extensive use of pesticides. In some countries, pesticides are even used for the control of forest pests, especially insects, is considered by the industry to be essential. Insecticides are often sprayed by aircraft over very large areas.
Effects:
Pesticides cause various fatal health hazards and degrade the quality of water. Degradation of water quality by pesticide runoff has two principal human health impacts. The first is the consumption of fish and shellfish that are contaminated by pesticides. The second is the direct consumption of pesticide-contaminated water.
Mitigation Measures:
Bans on certain active ingredients should be done. Revised pesticide registration criteria should be made. Training and licensing of individuals that apply pesticides should be done. Reduction of dose and improved scheduling of pesticide application to more effectively meet crop needs and to reduce preventative spraying should be done.