Water Meter Usage Tracking

[Hai Le]

Hello, I am planning on purchase two triplexes that have a single water meter for each property. I understand the cost of having to separate meters and purchasing additional water heaters and such will be hefty. Currently landlord pays for all utilities, is a system/product/device that can be installed to the water meter that tracks the usage of water through each unit so I would be able to bill the tenants separately?