I agree with Asanchez, first, you should phone the insurance company to ask them if you are actually covered. And then to decide whether to submit a claim. If I were you I would do it. Floods are a very real threat to many homes, and sometimes it`s not you fault like in you case. While some water damage is covered, there are some specific cases where it is not. In most cases, sudden and accidental discharge of water into your home is a covered peril; this means that if a pipe bursts out of nowhere, you`re likely covered. Damage as a result of negligence, on the other hand, may not be covered. Even if you do not have coverage for the flood damage, it`s not a bad idea to contact your home insurance company. They can direct you to emergency clean-up services and let you know if there is anything at all in the damage that could be covered.