Landlord - Water Bill Query

[Jack Tinker]

Hi All,

I am just starting the landlord process here in Winnipeg Manitoba. I am renting out both units of my duplex. There are separate meters for gas and electricity, but only a single meter for water. Therefore I included water in the rental amount, and I will pay for it each month. 

My worry is the usage will be out of my control, and I have heard horror stories of massive water bills from tenants. Is there anything I can add to the tenant agreement or any strategy I can implement to control this? 

Thanks in advance!