Sedges Creek is an ephemeral stream in Louisa County, Virginia, flowing into Lake Anna. As an ephemeral waterway, it carries water only during and immediately after rainfall events, running dry for extended periods in drier seasons. Its low and intermittent flow gives it limited dilution capacity: pollutants or thermally elevated water discharged into an ephemeral stream reach the receiving body, Lake Anna, without the buffering a perennial stream provides.

Virginia DEQ issued Amazon's final VPDES permit for the stream on 21 July 2026, authorising discharge of up to 280,000 gallons a day of pretreated non-contact cooling water into Sedges Creek from a 150-acre data-centre campus in Louisa County, effective 1 August . The five-year permit sets a maximum daily discharge temperature of 89.6°F and requires Amazon to fund financial assurance for nearby private wells, but does not require PFAS testing. The pretreated water still contains sulphuric acid, sodium hydroxide, and other treatment chemicals at concentrations permitted under the VPDES template.

The stream's ephemeral character remains central to the environmental objections that DEQ's decision did not resolve: concentration spikes from the discharge that would be diluted harmlessly in a perennial stream can reach Lake Anna intact , and with no PFAS monitoring requirement, any such contamination in the discharge would go undetected by design.

Common Questions

Where is Sedges Creek in Virginia?

Sedges Creek is an ephemeral stream in Louisa County, Virginia, flowing into Lake Anna. It is the receiving water body for Amazon's cooling-water discharge from a 150-acre data-centre campus adjacent to Dominion Energy's North Anna nuclear plant.Source: Virginia DEQ / phase2 analysis

Why does it matter that Sedges Creek is ephemeral?

An ephemeral stream runs only after rainfall and offers FAR less dilution capacity than a perennial stream. Discharge that would be diluted harmlessly in a year-round waterway can reach Lake Anna at full concentration via an ephemeral channel, making the monitoring and chemistry of the discharge more consequential.Source: phase2 analysis

How much water does Amazon want to discharge into Sedges Creek?

Amazon's VPDES permit application proposes discharging up to 280,000 gallons per day of pretreated non-contact cooling water into Sedges Creek. A separate Amazon facility nearby already discharges up to 460,000 gallons per day into Northeast Creek, another Lake Anna tributary.Source: phase2 analysis

Has Amazon been granted a permit to discharge into Sedges Creek?

Yes. Virginia DEQ issued the final VPDES permit on 21 July 2026, authorising up to 280,000 gallons a day of cooling water into Sedges Creek from 1 August 2026. The permit does not include a PFAS testing requirement.Source: phase2 analysis

Source Material

VPDES Permits — Virginia DEQ