A Virginia groundwater study is urging tighter water rules as data-center demand faces fresh scrutiny.
Why it matters: Northern Virginia is a major data-center hub, and tougher water rules could raise costs and slow expansion. The study adds a new regulatory front for an industry already facing pressure over power, zoning and resource use.
- Virginia released the long-delayed groundwater study on July 24, 2026.
- The report says eastern Virginia's groundwater supply is constrained and likely to decline soon.
- It says a data center using evaporative cooling would be unlikely to find a reliable groundwater supply anywhere in the study region under current conditions.
- Virginia has 371 data centers operating and 438 planned, according to Cleanview figures cited by AP.
Virginia's study strengthens the case for tighter oversight of data-center water use in the state, especially in the eastern coastal plain. The report says groundwater supplies are constrained and declining, and recommends that lawmakers strengthen regulators' permitting authority, require applicants to consider surface water or reuse before large groundwater withdrawals, improve local water planning, and add staffing and equipment for water management.
The report's warning is especially pointed for large users. It says, "Under current conditions, it appears unlikely that a data center with evaporative cooling technology (or any comparable water user) would find a reliable, sufficient groundwater supply anywhere in the region."
Virginia's data-center footprint is already enormous. AP reported the state has 371 operating centers and 438 more planned, underscoring why water policy in Northern Virginia is now a major industry issue. Read AP's coverage here.
The state has also moved separately to require data-center water-use reporting under legislation effective July 1, 2026, signaling a broader tightening of oversight. Virginia DEQ outlined that change in a bulletin here.
The release itself drew attention because it was delayed for months, prompting criticism from advocacy groups and questions from lawmakers before the governor's office provided it to AP late on July 24.
By the numbers
- 371 - data centers operating in Virginia, per Cleanview figures cited by AP
- 438 - additional data-center projects planned in Virginia, per Cleanview figures cited by AP
- July 1, 2026 - date Virginia DEQ's data-center water-use reporting requirement took effect
Yes, but: The report is a policy recommendation, not the final text of new regulations, so the scope and timing of any stricter rules are still unclear.
What's next: Lawmakers and regulators are likely to weigh the report's recommendations as Virginia considers next steps on groundwater permitting and water-use oversight.