Iron Mountain Hutto Hyperscale Campus
Site area
500 ac
Buildings
7
Cooling
Closed-loop cooling (stated in DCD reporting)
Developer
Iron Mountain Data Centers
Iron Mountain Data Centers is planning a seven-building hyperscale campus on approximately 500 acres along FM 3349 (CR 404) in Williamson County, on land south of Samsung Austin Semiconductor's Taylor fab site. The campus will include a dedicated on-site substation. Iron Mountain filed for wastewater services from the City of Hutto in March 2026, disclosing 30,200 gallons/day in sanitary sewer use. First grid-connected buildings are targeted for ~2030. This marks Iron Mountain's first major Texas expansion.
Water Impact
Daily water use (estimated range)
Unknown
Water returned per day
None reported
Per MW not publicly disclosed. Seven buildings with on-site substation. Iron Mountain disclosed only sanitary sewer figure (30,200 gal/day); cooling water not disclosed. Cannot estimate without MW., based on MW capacity not yet publicly disclosed as of 2026-04-15.
vs. 5M gal/day (typical 400 MW facility)
- Water intake
- Unknown
- Lost to evaporation
- 100%
- Returned to system
- 0% (None reported)
Direct water figures are estimates from permit applications and developer disclosures. Indirect (power generation) figures are calculated estimates. Actual water use depends on technology choices, operating capacity, and weather conditions.
Location
Address: FM 3349 (CR 404), south of Samsung Austin Semiconductor, Hutto, Williamson County, TX
Water source: City of Hutto Water (sanitary sewer confirmed at 30,200 gal/day; potable/cooling source not yet disclosed)
Infrastructure
- Water provider
- City of Hutto Water
- Power provider
- ERCOT / Oncor (+ potential behind-the-meter natural gas)
- On-site generation
- Behind-the-meter natural gas generation under consideration
This project needs your attention.
Application is filed — your voice carries extra weight right now
Officials are still persuadable. A formal application creates the paper trail that triggers public notice, but no vote has been scheduled yet. Letters received during the review period go into the record and are read by staff writing the recommendation.
Timeline
March 12, 2026
Iron Mountain presents wastewater services request to Hutto City Council
On March 12, 2026, Iron Mountain officials presented to the Hutto City Council, disclosing plans for a seven-building data center campus on ~500 acres at FM 3349 and seeking a wastewater services agreement with the city. Iron Mountain disclosed 30,200 gallons per day in sanitary sewer use and confirmed the campus will use closed-loop water systems. This is Iron Mountain's first major Texas data center expansion.
Source →(opens in new tab)March 1, 2026
Taylor Press reports Iron Mountain campus and incentive offer to Hutto
The Taylor Press reported that Iron Mountain had offered incentives to the City of Hutto in exchange for wastewater services for its planned FM 3349 campus, with first buildings targeted for ~2030. The story highlighted the campus's proximity to the Samsung Austin Semiconductor fab cluster and Iron Mountain's consideration of behind-the-meter natural gas generation.
Source →(opens in new tab)December 1, 2025
DCD first reports Iron Mountain seven-building hyperscale campus near Austin
Data Center Dynamics first reported Iron Mountain Data Centers' plans for a seven-building hyperscale campus on approximately 500 acres along FM 3349 (CR 404) in Williamson County, on land north of Norman Crossing and south of the Samsung semiconductor fab in Taylor. The campus will include a dedicated on-site substation. First grid-connected buildings targeted for ~2030, with behind-the-meter natural gas generation under consideration to accelerate capacity.
Source →(opens in new tab)
Sources
- 1. Iron Mountain eyes seven-building data center campus outside Austin, Texas — Data Center Dynamics, 2025-12-01. Link →(opens in new tab)
- 2. Proposed data center seeks wastewater services from Hutto — Community Impact, 2026-03-19. Link →(opens in new tab)
- 3. Data center offers incentives for Hutto services — Taylor Press, 2026-03-01. Link →(opens in new tab)
- 4. Iron Mountain Data Centers Hutto Campus — datacentermap.com — datacentermap.com, 2026-04-20. Link →(opens in new tab)
Community Notes
Wastewater request (March 2026) is the most recent public filing. MW not yet disclosed — prevents meaningful water consumption estimation. Proximity to Samsung's fab cluster makes the site strategically attractive. Behind-the-meter natural gas generation under consideration raises air quality and grid-independence concerns.