![In Discovery Bay, Calif., researchers are studying how natural systems affect water quality and ecosystem health. Man in high boots wading through filtering pond](https://are.berkeley.edu/sites/are.berkeley.edu/files/Screen%20Shot%202014-10-30%20at%209.04.41%20AM.png)
In Discovery Bay, Calif., researchers are studying how natural systems affect water quality and ecosystem health. Photo: David Sedlak
With a budget of nearly $40 million over five years, Re-inventing the Nation’s Urban Water Infrastructure, or ReNUWIt, is the largest project on urban water ever funded by the National Science Foundation. The NSF’s goals are fundamental, systemic, and far-reaching changes in the United States’ aging urban water infrastructure.