Illinois county list, with indication as to which document (Bulletin 40, Bulletin 40 Supplement I, or Bulletin 40 Supplement II) covers that county's public ground water supplies.
Use this login method if you
don't
have an
@illinois.edu
email address.
(Oops, I do have one)
IDEALS migrated to a new platform on June 23, 2022. If you created
your account prior to this date, you will have to reset your password
using the forgot-password link below.
