When a Well Water test is required, FHA, VA & RD Loans require that the water is tested for the following:
Lead
Nitrates
Nitrites
E-Coli
Total Coliforms
NOTE: Many Counties Do NOT test for lead and/or Nitrates
I usually find it easier, quicker, and possibly as cost effective to through a private company for a water test. Here are a few people you could contact that will test for the lead and Nitrates as well: