Landlord insurance policy with water backup coverage

[Rahul D.]

Does anyone know an insurance company that offers water backup coverage for landlord policy? I recently had water issue in the basement of a rental; due to power outage because of a storm, sump-pump stopped working and the basement flooded. When I called insurance, they said they will not cover anything; I learned the hard way that my insurance company (AllState) does not cover or offer coverage for water backup issues, in a landlord policy. Since then I've tried to look for such policy, but haven't come across any company that offers it. 

Please share if someone knows of a company that does offer such insurance and/or any other ideas to CYA in such situations. Thanks!