Well water and DuPont may not be a good combination. Find out if there is some sort of local Water Board and have a list of questions for them. Have they done anything more than fecal coliform counts on the water? Chemical tests are very expensive to have done yourself, so see if they've done them as a matter of routine, or to keep an eye on DuPont or the other industries in the area. If they have done tests in that area, ask if you can have a printout of the results.
Also ask if there is any kind of truth disclosure laws on water sources, like if the well runs all year or dries up, contamination issues, etc. Water tables are dropping everywhere due to heavy use.
Sue
All good points. In the area where I live water tests by the public utilities are required and paid for by the masses. The results are available on demand, and also published annually. Another tac you can use is to contact the local water filter companies. They will have their finger on the pulse and know exactly what's in the local water. You can get some good advice and take it with a grain of salt.