DETROIT (AP) - Officials say updates by Michigan to an environmental emergency communication system could improve response to problems in waterways including those along the U.S.-Canadian border. Environmental accident information is sent through Michigan's Pollution Emergency Alerting System. Emergency calls for years have been handled by a call center staffed by private contractors. In the coming months, a team of trained Michigan Department of Environmental Quality staffers is to begin handling those calls internally. An automatic "smart messaging" system then will forward information to emergency and government officials. The system is expected to have an effect in part along the St. Clair River and southern Lake Huron. That area contains several intake pipes that provide drinking water in the U.S. and Canada.