Arizona’s largest water provider tried Tuesday to defuse a multi-state dispute over the Colorado River, saying it regretted the belligerent-sounding words it used to describe its management strategy for the critical, over-used waterway. The Central Arizona Project, which provides water to about 5 million people, pledged to be more cooperative with other river users and promised “to have a more respectful and transparent dialogue in the future.” The river serves 40 million people in seven U.S. states and Mexico, and consumption is tightly regulated and closely monitored.