Good question. Typically the written lease between the landlord and the tenant controls the obligations owed the landlord by the tenant and vice versa in the absence of conflicting state law.In order for the tenant to be obligated for the fine levied by a municipality in your situation, the written lease has to specifically state that the item that the tenant was fined for was the tenant's responsibility under the agreement. If so, then you as the landlord woiuld be entirely justified under your lease to request that the tenant pay the fine that the city imposed concerning the rental.