High water bill due to toilet flush leakage

[Umair Khalid]

I am in New Jersey. I received a super high water bill ($3800) which is way higher than my usual bill ($800). Upon checking I found out that my tenant had a leaking flush tank in one of their toilets which they never told me about. Am I responsible for this bill or the tenant? Also if you are answering this, please quote a legal reference if you can.