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Update to BASINS 4.1 and New Web Address for BASINS

Dated: 10/18/2015

Announcement by EPA.

The BASINS website has moved to a new Internet address within the EPA Center for Exposure Assessment Models (CEAM) web content management system. Please bookmark

The data that BASINS downloads during project creation has also moved to a new Internet address on

These moves require a new version of BASINS 4.1.1 that downloads data from the new Internet address. Please download and install the new BASINS 4.1.1 executable located at:

  • Testing showed that a prior install of BASINS 4.0 or 4.1 should be uninstalled before installing BASINS 4.1.1.
  • Be sure you have Administrator privilege while installing BASINS 4.1.1.
  • Testing showed that running BASINS 4.1.1 As Administrator may be required for downloads to work properly.

You can share your experiences with the basinsinfo listserv by replying to this or sending an email to Remember that replies go to the whole list. You may also send an email directly to me for support questions at

Thank you for your continued support and use of the BASINS model.


Senior Information Engineer

CSC, Contractor to the U.S. EPA

6201 Congdon Boulevard, Duluth, MN 55804 North American Public Sector | office: 218.529.5140 | fax: 218.529.5003 | |