How to sub meter H2O in multifamily?

[Joey Newton]

Good morning BP universe!

I recently purchased a pair of 4 families in the St. Louis county area, and I am a total virgin when it comes to this. I want to sub meter each unit's water, so I would non longer have to bear that cost. I have heard of companies that are willing and able to get each unit on its own water meter. Has any one done this before/ can anyone recommend a company that can do this. 

Thanks everyone. Have a great day!

- joey