Water bill

I’m still fairly new to Boulder. Is it normal to have very expensive monthly water bills ($100+)?? It’s just my one roommate and I in our apartment and I don’t feel like we use THAT much water. Sewer and storm water are separate so that’s not apart of this cost. Due to the outrageous amount, I suspected a leak so I put in a maintenance request to have someone inspect our unit but my request was cancelled without an explanation!