Splitting utilities in a duplex

[Jacob Yates]

Hi everyone I am looking at making an offer on my first deal. I would like to have each tenant pay for their own utilities. I know some laws may require that certain things be set in place to have tenants pay for their own utilities. Outside of the law what are the necessities to have tenants in a duplex pay their own utilities. Such as water, trash, and electricity? I know the electricity needs to be multimetered, but does multimetering the house also cover the water usage for each individual unit? 

Also if I have each unit individually metered can I then have the utility companies charge the renters directly for the utilities? if I can do such a thing I will be including this in the lease.