Virginia Department of Environmental Quality

The Virginia Department of Environmental Quality is the state agency responsible for issuing and enforcing permits covering air, water, and land use across the Commonwealth. On 21 July 2026 it issued Amazon's final VPDES permit to discharge up to 280,000 gallons a day of cooling water into Sedges Creek, a tributary feeding Lake Anna adjacent to Dominion Energy's North Anna Nuclear Power Station, effective 1 August . Lake Anna is a closed-loop cooling reservoir whose thermal dynamics are already constrained by nuclear plant operations, and the permit's 89.6°F maximum daily discharge temperature is DEQ's answer to whether the additional thermal load can be absorbed without exceeding NRC-adjacent compliance thresholds.

DEQ operates under the Virginia Water Control Law and issues National Pollutant Discharge Elimination System (NPDES) permits as Virginia's delegated EPA authority. For a thermal discharge of this scale into a regulated reservoir, the agency modelled cumulative heat loading alongside existing discharges from North Anna and from Amazon's separate 460,000 gal/day Northeast Creek facility. The permit requires Amazon to provide financial assurance of $25,000 per private well within a mile of the campus, plus $500,000 to address any impact on neighbours' water supply, but DEQ applied the standard non-manufacturing SIC-code template rather than adding a discretionary PFAS testing condition, despite objections raised at the 9 June public hearing.

DEQ's decision sets a precedent for the dozens of further large-volume thermal and cooling-water discharge permits still moving through Virginia's data-centre pipeline: the standard template, with no PFAS monitoring, is now the confirmed baseline rather than an open question. The Amazon case remains significant because it arrives as Virginia's data-centre sector simultaneously faces a legislative standoff over tax exemptions and federal emergency curtailment orders against backup generation.