@Marcia Maynard
Wow, that was one heck of a response. This being my first rental unit, I have learned a lot along the way (only owned it for about 6 months), so let me address some of your points:
1- Unfortunately I do not trust my property manager to handle this. He is a small operation with 150-200 properties, and it doesn't seem like he has a very good system in place. With that, I am looking into changing managers to someone who can more appropriately handle properties.
2- You are correct, this is my folly. Like I said in my original post, my property manager suggested I do what you suggested, but due to my inexperience I decided to separately bill. This is the first tenant (which I inherited) to move out, and moving forward I will be including a water charge moving forward. Do you have any suggestions on how I could correct my other 3 units?
3- Turning off the water was only an idea, and after searching BP everything said exactly what you did.
4- Based on the lease that I was provided from the prior owner, I do not see a section for early termination. It would seem that is a large issue.
5- I did obtain a security deposit, unfortunately for me it wont cover the water bill and months rent. But if we follow that list, they wont be getting that deposit back.
As far as 6, 7, and 8, that gave me some ideas on a constructive conversation to have with them on Thursday.
Thank you so much for your input!