Periodically check the water lines and hoses that connect your appliances to your home's plumbing. The material used in water lines and drain hoses is something that will degrade over time. Rubber hoses can become cracked and brittle, drain hoses the same. Even the material inside the braided steel hoses will weaken. An appliance's water inlet valve usually has a body made of plastic which can crack or start leaking. If you are going to be away from home for any length of time, shut off the valves which supply water to the appliances to avoid unpleasant surprises.