Who pays for a water leak ?
For me and my tenants, it depends. If there is a freeze and they have followed my instructions, it is very unlikely that there will be a water leak or pipes broken. But if it does and the water bill skyrockets, I will generally give thema credit on their rent.
If there is some other cause of a leak, thenI will examine it in a case by case basis to determine who has responsibility or if we have a shared responsibility and split the excess.
I have to say that this is a really rare occurance, but tenants have a responsibility to update me on any condition of the house that needs repair. Minor repairs that are under $50, tenant is responsible to handle.