U.S. Senators Mark Kelly (D-AZ) and John Cornyn (R-TX) introduced the Transboundary Groundwater Assessment, Management, and Research Act on June 23, 2026. The bill aims to improve understanding and management of groundwater resources shared between the United States and Mexico.
The legislation would direct the U.S. Geological Survey (USGS) to conduct a comprehensive assessment of transboundary aquifers along the border. It also establishes a research program to study groundwater availability, quality, and sustainability in the region.
According to a press release from Senator Kelly's office, the bill addresses critical water needs in arid border communities. 'Arizona knows the value of every drop of water, and this bill will help ensure we have the data needed to manage our shared groundwater resources,' Kelly said.
Senator Cornyn emphasized the importance of collaboration: 'Texas communities rely on these aquifers, and we must work with Mexico to protect them for future generations.' The bill has been referred to the Senate Committee on Energy and Natural Resources.
