10 Best Water Infrastructure Stocks to Buy as AI Data Centers Strain Resources

7. Tetra Tech, Inc. (NASDAQ:TTEK)

Number of Hedge Fund Holders: 46

Tetra Tech, Inc. (NASDAQ:TTEK) is one of the best water infrastructure stocks to buy as AI data centers strain resources. On June 15, 2026, the company said Scotland Excel selected it for all nine service lots under a four-year engineering and technical consultancy framework. The contract covers support for local councils across Scotland, including drainage and flooding, coastal and maritime, transportation, and master planning projects.

The award gives Tetra Tech a fresh infrastructure story tied to the broader pressure on water systems, flood resilience, and public-sector planning. That is relevant to the AI data center theme because new facilities are increasingly running into the same constraint set: water availability, environmental permitting, local infrastructure capacity, and community resistance. Tetra Tech made that connection directly on April 29, 2026, when CEO Roger Argus said the company’s high-end consulting services for water supplies and environmental impact mitigation are becoming increasingly critical to gaining community support for data center projects.

Tetra Tech, Inc. (NASDAQ:TTEK) provides consulting, engineering, program management, water, environment, and sustainable infrastructure services for public and private-sector clients worldwide.

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