U.S. FDA to post environmental assessments of foodborne illness outbreaks

This is a great resource provided by FDA. From these investigations, we will be able to learn what led to the contamination.
http://www.fda.gov/Food/FoodSafety/FoodborneIllness/ucm235425.htm

In the first investigation posted, romaine lettuce contaminated with E. coli non-O157 STEC which led to 33 illnesses, investigators identified the irrigation water as the probably cause.

http://www.fda.gov/Food/FoodSafety/FoodborneIllness/ucm235477.htm