The Southern Nevada Water Authority (SNWA) is a cooperative agency formed in 1991 to address Southern Nevada's unique water n ... eeds on a regional basis. SNWA officials are charged with managing the region's water resources and providing for Las Vegas Valley residents' and businesses' present and future water needs. Find us on Facebook (@thesnwa), Twitter (@SNWA_H2O) and Instagram (@southernnevadawaterauthority) read more