Landloard insurance is just like homeowner's insurance

管道堵塞维修等生活造成的修理 needs to be covered by home warranty coverage you buy separately. However, you'll pay trip fee range from $50-$100 per repair request.

Not many home warranty companies cover things like sewer line backup.

In fact, you should put a clause on the lease and let the renter take care of these "管道堵塞维修等生活造成的修理".