A water main break is causing some pressure problems in Bossier City. The city Utilities Department is working to repair a break in a major water transmission line that serves much of north Bossier. The break was discovered late last night and involves a 20-inch line, located near the railroad tracks north of the 3300 block of Shed Road. Because of the break, many portions of north Bossier are experiencing low water pressure. Crews are working now to repair the line.