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Vaulted Deep has raised $56 million to offer deep well slurry injection as a solution for organic waste disposal, addressing concerns about landfill and incineration capacity. The technology, originating from Advantek, sequesters waste below impermeable rock layers.

Vaulted Deep's existing projects include a facility in Los Angeles that processes 20% of the city's biosolids and a second site in Hutchinson, Kansas, which has sequestered over 157,000 metric tons of waste. The company is developing additional on-site solutions for clients and plans to launch a new facility in Weld County, Colorado, in 2027. It has secured significant contracts and partnerships, including a $58.3 million deal with Frontier Climate.