Last August, the U.S. Bureau of Rec­lamation declared a Tier 1 water short­age on the Colorado River — the first time a shortage has been declared since a water-sharing agreement was ratified by seven Western states in 1944. The...

Earlier this year, the Arizona Corporation Commission asked the three largest classes of water companies to give a status report on their readiness to ensure sufficient water supply in the face of drought and mandatory cuts to Colorado River...