Water under floorboards

We have an old 7 bedroom victorian house built circa 1874. When we moved in we experienced a power cut and realised we had lost power due to water under the floorboards. In the garden a few years after we moved in we discovered a well/water chamber which has pipes entering and leaving which run across the garden. We rodded one with chimney poles and reached the road before we hit a blockage (this may be because the road was built after the house). Anyway to alleviate the problem we have pump in the well which has a float and when the level reaches a certain point the pump kicks in. This is not ideal so I would like to know who we need to get in to help with the problem and is it something we can claim on our insurance for?