For years, data center site selection in the United States ran on three questions. How much power? How much land? How fast can we build? In 2026, a fourth question moved to the front of the line. Where will the water come from, and can you prove the supply is sustainable?
Texas made that question impossible to ignore.
What changed in Texas and Arizona this year
In August, Governor Greg Abbott paused new data centers from joining the Texas power grid until state regulators complete a review of their energy and water use. On September 21, he went further and directed TCEQ to stop issuing permits to data centers until ERCOT finishes an audit of impacts on the grid and water resources. Three days later, the Attorney General opened an investigation into data center developments to check transparency and compliance with the TWDB water use survey.
Arizona offers a different lesson. The Project Blue data center in Pima County could use up to 31 million gallons of water a year. The Tucson City Council voted against any involvement, which removed the option of city supply. The developer turned to groundwater instead. To win permits for two new wells, the company had to show a valid groundwater right and show that the new wells would not affect existing wells nearby. The permits allow up to 96.5 acre feet per year, and the developer agreed to a closed loop air cooled system.
Smaller projects face the same scrutiny. In North Texas, the North Texas Groundwater Conservation District approved a well permit for a data center near Princeton, drawing on the Woodbine Aquifer at up to 150 gallons per minute.
The pattern is clear. Regulators, communities, and courts now want hard groundwater data before they say yes.
Why groundwater is under the spotlight
The national picture explains the pressure. Scientists advising the White House warned that groundwater pumping in the US now exceeds natural recharge. They noted that much of the water in major aquifers is fossil water recharged more than 10,000 years ago, and that western aquifers are being depleted fast, mostly by agriculture.
Surface water offers little relief in the Southwest. Lake Mead, the nation’s largest reservoir, hit its lowest level on record this year.
When a new industrial user arrives in a stressed basin, every existing well owner, farmer, and town asks the same thing. Will your pumping lower my water table? Without credible answers, projects stall.
What groundwater consultants do for developers
Groundwater consultants are hydrogeologists and engineers who measure and predict how aquifers behave. For a data center, industrial plant, or large campus, the work usually covers five steps.
Site screening. Review of aquifer type, depth to water, existing wells, water rights, and the rules of the local groundwater conservation district or state agency. This step can rule out a site before you buy land.
Test drilling and pumping tests. Controlled tests measure sustainable yield, drawdown, and recovery. These numbers form the core of any permit application.
Well interference analysis. Modeling shows how your pumping affects neighboring wells. Arizona required exactly this kind of proof for Project Blue.
Water quality testing. Total dissolved solids, hardness, silica, and other parameters drive treatment cost and cooling system design.
Long term monitoring. Monitoring wells and data loggers track water levels after you start pumping, so you can report to regulators and answer community concerns with facts.
Where projects lose time and money
We see the same mistakes across states. Developers lock in land and power first, then discover the aquifer cannot support the planned draw. Teams submit permit applications with thin data, then face contested hearings. Cooling design gets fixed before anyone tests water chemistry. Nobody plans monitoring until a neighbor complains.
Each mistake adds months. In the current climate, months can decide whether a project gets built at all.
How to choose groundwater consultants in the US
Groundwater law varies sharply by state. Texas works through groundwater conservation districts. Arizona has Active Management Areas with grandfathered rights. California runs under the Sustainable Groundwater Management Act. Your consultant needs to know the rules where you build.
Ask these questions before you hire a team.
Have you supported permits in this state and this district or management area?
Do you run your own pumping tests and well interference models?
Can you testify or present data at a permit hearing if needed?
How will you design and run monitoring after approval?
Can you share sample reports with confidential details removed?
Good groundwater consultants give you numbers early, including the numbers you do not want to hear.
What you can do now
If you have projects in the pipeline, list every site that depends on groundwater. For each one, note the permitting authority, available water rights, and whether anyone has run a pumping test. Flag sites in Texas that may sit inside the permitting pause. Commission site screening before you commit capital on new land.
Water is now a gating item for US data centers and heavy industry. Developers who bring groundwater consultants in at the start will reach approval faster, defend their numbers in public, and build with fewer surprises.