Bill renews border aquifer study program through fiscal year 2036 and adds Arizona

What does this do?

The bill renews a federal program, created by a 2006 law, that pays for scientific work to map shared US-Mexico aquifers and measure their water quantity and quality. Its funding authorization ran out after 2016, and the bill would restore it for fiscal years 2026 through 2036 and reset the program's end date to count from the passage of this bill. It also adds Arizona to the priority aquifers, which now include those along the New Mexico and Texas borders.

Who does it affect?

Residents, farmers, and local water agencies in the border regions of Arizona, New Mexico, and Texas, who rely on these shared water sources, are the most likely to be affected. The bill was introduced by Senator Kelly of Arizona and Senator Cornyn of Texas.

Why does it matter?

Priority for study would extend to Arizona, except for the aquifer under Arizona and Sonora, Mexico that is partly within the Yuma groundwater basin, as defined by a 1984 order from Arizona's water agency. That aquifer would not receive the new priority status.

What does it cost, and who pays?

• Authorizes spending only
• Covers fiscal years 2026 through 2036
• Funding needs separate budget bills