Why Toilet Gurgles When Shower Drains: Diagnose Clogs
A toilet gurgles when the shower drains because water is moving through a restricted or poorly vented drain-waste-vent system. The shower and toilet may share a branch drain, so escaping air uses the toilet trap as a pressure-release path. The result is bubbling, chugging, or a brief change in toilet-bowl water level. Key Facts at […]