first contact the first pair of probes 62 closing an electrical circuit and activating alarms and valves as disclosed above should this first contact fail for any reason a second electrical contact will be made as the rising water inside the containers 32 or 44 fig1 lift the block 64 until the metal cap 66 touches the second pair of probes 68 when this contact is made an electrical circuit will be closed activating the appropriate valves and alarms in the unlikely event that both of these contacts fail a third circuit would be closed when the rising water reaches the second pair of probes 68 any of these events will lead to the proper valves and alarms being activated thereby providing fail safe protection for a home or building from water damage preferably the block 64 is made of foamed polystyrene 34 stytrofoam 34 and the probes 62 68 and cap 66 of steel even more preferably the entire water detector 60 is enclosed by a plastic housing 68a reference is now made to fig5 in which is shown the essential components of a second embodiment of a home protection system made in accordance with the principles of the present invention generally denoted by the numeral 90 the system 90 comprises a monitor panel 92 for monitoring and controlling the system 90 mounted on the panel 92 are an on off switch 66 a plurality of incandescent lamps 74 and an audible alarm 115 or 230 vac power sources 98a 98b 98c and 98d provide electrical power for a hot water tank 6 electrical dish washer 102 electrical washing machine 104 and air conditioner 130 power to the monitor pane 92 is provided by a 24 volt direct current vdc four way bridge rectifier not shown connected.