the average amount of herbicide residue that flow from farm lands into water bodies in United States?

Question

I am using it for a science home work

Answer 1

The list of herbice residue was difficult to find on any site, just doing a quick search, but there IS a lot of it! Here are some site to check out:

Atrazine (herbicide in Drinking water):
http://www.epa.gov/waterscience/criteria/humanhealth/atrazine/

What the gov't is doing to combat pollution in The Great Lakes:
http://www.epa.gov/glnpo/glwqa/ijc9th/index.html

General EPA info for younger students:
http://www.epa.gov/kids/

Estimated Herbicide use in 48 states (good one):
http://water.usgs.gov/GIS/metadata/usgswrd/XML/herbicide5.xml

Good luck...I'm sure You'll find out more than you want to know!