PLAIN DEALING, La. (KTAL/KMSS) – Officials in Plain Dealing announced that they are instituting a system-wide boil advisory as a precaution after a water main was damaged. Emergency work near the intersection of S. Calhoun and E. Caroline Ave started around 11 a.m. after a contractor doing work in the area struck an eight-inch water main, resulting in some Plain Dealing water customers losing pressure while they worked to repair the break. Wor…