Columbus Ohio - Unpaid water bill

[Jovon English]

Hello, I'm seeking advice on an inherited bad tenant.  She is nearly $500 behind on the water bill which for the first few months was in my name but now it is in her name.  However, in Columbus the landlord bears the ultimate responsibility of making sure the bill is payed or get a lien on the property. 

My lease does state that it is the tenant's responsibility to pay all utilities.  Based on that, I served a Lease Violation with 30 days to resolve the issue or face eviction.  Just want to check with you all if you had the same situation and to make sure I'm doing this right.  Thanks!