I live with 3 roommates and all 4 of us are on a lease for the condo owned by our landlord.
TL;DR my roommate "Jim" caused water damage to several rooms and I'm looking for advice on what I can personally do since none of the damage was directly my fault.
Full story: The sink in the bathroom on the second floor doesn't drain and we have been unable to use it without the sink filling up with water. The previous landlord knew about the plumbing issues and our current landlord was made aware of this problem when ownership of the condo was transferred to them. In the past few months since then, the landlord hasn't taken any steps to fix it, so my roommate "Tom" started to work on it himself in an attempt to clear the blockage.
Tom disassembled the pipe directly under the sink and for whatever reason was unable to fix the problem and left everything disassembled for a few days while he tried to come up with a solution. Every one of us knew NOT to run the faucet and to use the first floor bathroom sink instead. No problems for a few days.
However, Jim ended up using the sink on the second floor and left the faucet running for at least 2 hours. The water had nowhere to go but out the pipe and onto the bathroom floor. And over the course of those 2 hours the water went through the ceiling of the first floor (it was pouring out of the ceiling when we discovered it) and continued to leak down into the basement. The ceiling is deformed due to water damage and I can only assume there is still water in the ceiling of the first floor and the basement. I'm sure it's safe to assume there could be water in the walls, too.
Clearly there will have to be a lot of work done (and money spent) to fix the damage. From what I understand of the lease, the landlord won't care whose fault it is and will expect us to collectively pay him back for the repairs? As I did not cause any of the damage, what options do I have to protect myself and minimize the amount of money that I will have to pay? Do I hope for the landlord to have mercy on me, do I take this to court (I wouldn't expect to win as there is no proof it wasn't my fault), do I take my roommate(s) to small claims court, or am I just SOL?
Edit: I don't have renter's insurance and I'm unsure of what my landlord's insurance situation is.