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“The holdup right now is that the codes in each state are different regarding gray water, and it would be very challenging to bring this product to market at this point,” says Nicolas Grohe, director of marketing and product development for Hansgrohe North America. While U.S. code authorities determine how clean recycled water needs to be, “There are no standards or codes in the U.S. now for what is gray water,” says Lars Christensen, Hansgrohe senior product manager. In the meantime, interested U.S. architects can specify the system for their European projects.