Datacenter Water Consumption
The freshwater draw from cooling-tower evaporation and direct-evaporative cooling at hyperscale datacenters — up to ~5 million gallons per day per facility for large GPU-heavy builds in hot climates. Active community and regulatory pushback in Bexar/Hood Counties (Texas), central Virginia, central Arizona, and parts of the Pacific Northwest.
Summary
The freshwater draw from cooling-tower evaporation and direct-evaporative cooling at hyperscale datacenters — up to ~5 million gallons per day per facility for large GPU-heavy builds in hot climates. Active community and regulatory pushback in Bexar/Hood Counties (Texas), central Virginia, central Arizona, and parts of the Pacific Northwest.
A siting constraint that compounds **Datacenter Power Shortfall** — a region with available power may still fail water-permit review. Combined with power, the two constraints define which geographies can absorb new S3 capacity at all.
- Closed-loop air cooling solves the water problem at the cost of higher capex and worse PUE — the trade-off is not free.
- Water draws are typically a public-utility-commission disclosure, not a federal one — the regulatory regime varies by state and county, which is what produces the patchwork of moratoria.
- "We just won't disclose" is no longer viable — ESG reporting standards now flag water as a top-tier sustainability disclosure for cloud infrastructure.
- Compounds Datacenter Power Shortfall as a geographic constraint on new S3 region capacity
scoped_toObject Storage, S3
Definition
The freshwater draw from cooling-tower evaporation and direct-evaporative cooling at hyperscale datacenters, currently estimated at up to **5 million gallons per day per facility** for large GPU-heavy builds in hot climates. Active community and regulatory pushback has emerged in **Bexar and Hood Counties (Texas)**, central Virginia, central Arizona, and parts of the Pacific Northwest where datacenter draws compete with municipal supply or agricultural rights. Several Texas counties debated formal moratoria in early 2026.
Connections 2
Outbound 2
scoped_to2Resources 3
Bexar County (San Antonio) case study documenting a single hyperscale facility's 5-million-gallon-per-day draw — the canonical reference for the per-facility consumption figure.
Lincoln Institute analysis of land and water impacts of datacenter growth — connects siting friction to land-use regulation across multiple jurisdictions.
Public Citizen advocacy piece around the Texas House data-center hearings — primary evidence of the regulatory pushback shaping the moratoria pattern.