If I have a water main leak at the house I RENT am I responsible for the additional increase in my water bill?

I have discovered a water main leak in the city line coming into my house which I rent...It has apparently been leaking for several days and Im sure that my next water bill will increase substantially.I have shut off the main line and currently the leakage is stopped and I have no water. I have reported it to my landlord and they are sending out a plumber tomorrow morning. Am I responsible for the additional financial issues that may arise from this leak or is my landlord or the city responsible? It is an underground main line coming directly into my house which I rent.....Anyone know what happens on my next bill??????