I haven't seen an answer yet to the question in my posting yesterday, so I  
assume no one noticed it. So I'll ask again, and rephrase it:
 
How much of the nitrate that is being removed from the Des Moines water  
supply originates from factory farms, and how much comes from farm field 
runoff  from ammonium nitrate and other nitrate fertilizer applications?
 
Is it, say, 5% from factory farms and 95% from fertilizer  applications 
other than hog manure? No, I'm not defending CAFOs. I just want to  know.
 
Neila, maybe this is something you could research?
 
 
Thanks,
Tom

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