With severe drought strangling the West, the country’s largest water provider has embarked on a multibillion-dollar project that could help them cope with increasingly frequent shortages exacerbated by climate change.

The Metropolitan Water District of Southern California wants to recycle Los Angeles’ wastewater, creating a new supply stream that would significantly reduce the city’s reliance on imported water from Northern California and the Colorado River.

It would mark a new paradigm in Western water infrastructure. Instead of the dam-building and constructing massive pipelines and aqueducts to connect far-flung rivers to cities, Metropolitan’s proposal focuses on producing “new” water locally. And it seeks to utilize what has historically been wasted; Los Angeles’ wastewater is currently treated and discharged into the Pacific Ocean.