Is this property damage deductible as a casualty loss?

This will be one of your weirder questions. :-) We have a 5-acre property; the main water line runs from the road back to the house, about 800 feet away.

We have a lot of bedrock here and had a 1,000 year flood last year, which shifted the berocks/soil. This year the water pipe broke under the pressure, $6000 to install a new line. Is that deductible? Insurance won't cover it.