There will be a planned outage of this website beginning 8:00 am CST on Monday, March 3 and lasting through Wednesday, March 5 as we migrate our network to EPA’s National Computer Center. During the move, this website will be unavailable. Please check the site on Thursday March 6, 2025 after 8 am CST as we hope to have all services restored by then.

Il y aura une interruption programmée de ce site web à partir de 8h00 CST le lundi 3 mars et jusqu'au mercredi 5 mars, car nous transférons notre réseau vers le Centre National de l'Informatique de l'EPA. Pendant cette période, le site web sera indisponible. Veuillez vérifier le site le jeudi 6 mars 2025 après 8h00 CST, car nous espérons avoir rétabli tous les services d'ici là.

Groundwater Documents

U.S. and Canada Release “Groundwater Science Relevant to the Great Lakes Water Quality Agreement: An Updated Status Report”

The 2012 Great Lakes Water Quality Agreement includes a commitment under the Groundwater Annex to “publish an initial report on the relevant and available groundwater science, and update this report at least once every six years.” The first report, Groundwater science relevant to the Great Lakes Water Quality: A status report, was released in 2016. […]

Posted: January 10, 2025

U.S. and Canada Release Final Report on Groundwater Science

The 2012 Great Lakes Water Quality Agreement includes a commitment to publish a report on relevant and available groundwater science. In response to this commitment, a report that documents groundwater science relevant to the Great Lakes Water Quality Agreement has been finalized after considering public comments received over December 2015 to the end of January […]

Posted: June 13, 2016