In many states, individual metering of water/sewer and the like requires you to be under the umbrella of that state's public utility commission.
The local water authority may be able to work out an arrangement to meter an bill your tenants directly if the lease doesn't prohibit this. However, the ease of this will be likely be determined by:
1. Access to the meter after installation
2. if access is restricted, does the authority use Automated Reading.
3. Does the connection (tap) fee for this outweigh the benefit to doing it?