Leakage protection device for automatically closing a hose line or pipe for transporting liquid or gaseous media, in particular water, comprising - a central supply line, - a main channel arranged between the central supply line and a subsequent house installation, and a bypass, - a closure member for interrupting the total volume flow, - a shut-off valve in the main channel which is closed when the pressure difference across the shut-off valve is less than an opening threshold value Δpö, and is open when the pressure difference across the shut-off valve is greater than the opening threshold value Δpö, a volume flow being guided completely through the bypass when the shut-off valve is closed, and - an electronic control device and means for closing and opening the closure member, a membrane being arranged in the bypass, characterized in that the membrane has a through-opening, a force being generated on the membrane when there is a volume flow through the through-opening, in that the leakage protection device comprises means for directly or indirectly determining the force on the membrane, and in that the electronic control device is designed such that it receives measurement signals from the means for determining the force on the membrane and, when a predeterminable limit value GW is exceeded or not met, transmits control signals for closing the closure member to the means for closing the closure member and/or generates a leakage alarm signal. - a central supply line, - a main channel arranged between the central supply line and a subsequent house installation, and a bypass, - a closure member for interrupting the total volume flow, - a shut-off valve in the main channel which is closed when the pressure difference across the shut-off valve is less than an opening threshold value Δpö, and is open when the pressure difference across the shut-off valve is greater than the opening threshold value Δpö, a volume flow being guided completely through the bypass when the shut-off valve is closed, and - an electronic control device and means for closing and opening the closure member, a membrane being arranged in the bypass, characterized in that the membrane has a through-opening, a force being generated on the membrane when there is a volume flow through the through-opening, in that the leakage protection device comprises means for directly or indirectly determining the force on the membrane, and in that the electronic control device is designed such that it receives measurement signals from the means for determining the force on the membrane and, when a predeterminable limit value GW is exceeded or not met, transmits control signals for closing the closure member to the means for closing the closure member and/or generates a leakage alarm signal. characterized in that the membrane has a through-opening, a force being generated on the membrane when there is a volume flow through the through-opening, in that the leakage protection device comprises means for directly or indirectly determining the force on the membrane, and in that the electronic control device is designed such that it receives measurement signals from the means for determining the force on the membrane and, when a predeterminable limit value GW is exceeded or not met, transmits control signals for closing the closure member to the means for closing the closure member and/or generates a leakage alarm signal.