Dataset Groups Activity Stream IEPA Groundwater Ordinance Reviews The Groundwater Ordinance Status Chart is an informal listing of the groundwater ordinances reviewed for suitability as environmental institutional controls under 35 Ill. Adm. Code 742.1015. Data and Resources dataCSV Explore Preview Download environment gw ordinance iepa Additional Info Field Value Last Updated August 14, 2017, 19:35 (UTC) Created August 14, 2017, 19:35 (UTC)