Welcome to the Western Coalition of Arid States

WESTCAS is a coalition of approximately 75 water and wastewater districts, cities, towns, and professional organizations focused on water quality and water quantity issues in the states of Arizona, California, Colorado, Nevada, New Mexico, and Texas. Our mission is to work with Federal, State, and Regional water quality and quantity agencies to promote scientifically-sound laws, regulations, appropriations, and policies that protect public health and the environment in the arid West.

To learn more about WESTCAS play this 14 minute video -