Western U.S. states continue to find themselves in a record-breaking 20-year drought that increasingly threatens drinking water supplies. In California, currently 95% of the state is under “severe drought” conditions according to the U.S. drought monitor. Approximately one-third of the state’s drinking water supply is fed by runoff from melting snow, but in the Sierra Nevada mountains, snowpack is at only 29% of normal levels. California and other western states, along with the federal government, have been prompted to take stringent action to conserve remaining water resources.