Gradiant, a Boston-based designer of water treatment solutions for the semiconductor, pharmaceutical and food industries, said it reached a valuation of $1 billion in its latest round of venture capital financing. The company said Wednesday it raised $225 million in Series D financing led by BoltRock Holdings and Centaurus Capital. It’s raised a total of $400 million in funding for 900-employee Gradiant, which was founded in 2013 at Massachusetts Institute of Technology. The financing round comes despite a slowdown in venture capital deals in 2023.
