• For information about the 305(b) Report and Surface Water Monitoring and Assessment of inland lakes, rivers and streams, and Lake Michigan:

    Division of Water Pollution Control

    Surface Water Section

    P.O. Box 19276

    Springfield, Illinois 62794-9276

    Ph: 217-782-3362

  • For information about NPS Pollution, Watershed Protection, Livestock/Agricultural Chemical Facilities, and TMDL's:

    Bureau of Water

    Watershed Management Section

    P.O. Box 19276

    Springfield, Illinois 62794-9276

    Ph: 217-782-1654

  • For information about Water Quality Standards:

    Division of Water Pollution Control

    Standards Section

    P.O. Box 19276

    Springfield, Illinois 62794-9276

    Ph: 217-782-3362

  • For information about Groundwater Protection and Groundwater Quality Standards and Technological Control Regulations:

    Division of Public Water Supplies

    Groundwater Section

    P.O. Box 19276

    Springfield, Illinois 62794-9276

    Ph: 217-785-4787

  • For general requests for information regarding Water Pollution or Drinking Water issues:

    Bureau of Water

    P.O. Box 19276

    Springfield, Illinois 62794-9276

    Ph: 217-782-1654