Emergency Advice Find where the main water shut-off valve is located . Locate where the water heater off . If it is a gas water heater , turn the switch to the " pilot " position. Use single step keys insulation for water continue to serve the rest of the house , while the drain is being repaired . Always have to hand pliers multiple positions. If the delivery tube is broken and causing a leak , screw lid or plug to seal a leak when it is repaired . Use tape type " duct tape" or pipe sealing tape to attach a crack in a pipe . Have on hand a pair of pear type openers in various sizes to fix minor fillings in sinks . To unclog a toilet , use a plunger type forced cup .