How do I collect sewer expense from tenant? One bill, 2 sides

[Jonathan Perez]

So the sewer bill came in. The city says that they only send out one bill and it is to be billed to the owner.... how do I go about charging the tenant for it? It's $138. So that's like $69 a side. Do I just hit her and say "hey, I need that $69 for the sewer" and show her the bill? Or is there a better way to do this?