Water Molecule, with its bright red oxygen atom and two white hydrogen atoms, feeds reclaimed water through a purple "straw" and into a 100-foot long purple pipe, Bio Boulevard, that delivers it to a natural filtration system in the surrounding landscape. Purple pipe is the industry standard for signifying recycled and reclaimed water, not only at Brightwater but around the world. In Simpson’s piece, the pipe is held aloft by concrete tetrapod forms that the artist sees as civic employees carrying water collectively in an effort that visually references ambitious public works projects—including Brightwater itself.

Simpson is known for working with found and recycled materials. He has been commissioned to created dozens of public artworks in the United States, Canada, and beyond.