Multi Family Utilities

[John Wilson]

I have seen several posts about this topic but none answered the question I am looking for.  I own several duplexes that are not separately metered.  I am unable to efficiently meter them because of the cost involved.  I would prefer to create a flat "water/sewer/trash" charge every month of $50 per tenant but I can't find anywhere that says whether or not this is legal. 

I understand that sub-metering is preferable but am simply looking for an answer as to whether or not flat fee is legal.  

Im in Ohio if that helps.

Thanks for any insights!