How can we keep waterways safe when using pesticide on the lawn or in the garden

We have to use the pesticides for lawn and garden at a certain distance from waterways in order to safe it from contamination.

Explanation:

Waterways are those water bodies which are used for the transportation of people or goods by boats from one place to another. Pesticides are the chemical substances that are used for harmful insects which causes damage to the plants. These pesticides pollute the water bodies and destroy marine animals. So pesticides are used far from water bodies.