Tenants failed or delayed to report water leaks

[Heather Yates]

I have a tenant in an SFR with 6 months remaining on their lease. I lived in the home for 5 years before renting it out without major problems. Just a few days ago I received a call from the local utility company regarding a large, past due water and sewer bill. Sent a plumber out who found $5000 worth of work (water main valve leak, hot water tank leak, HVAC condensation pipe removed, main line back up from laundry). Per the utility company the tenant has been behind for more than 4 month. Who is responsible for the repair costs here?