[Gogar]

Wolfe,


It means the water meter for each apartment is at the hot water heater for each apartment,

and the total usage for each apartment is "estimated" based on the amount of hot water used,

via an "accepted" percentage of hot/cold usage.

It doesn't mean they're billing her TWICE for hot,

It means they're ESTIMATING the amount of cold based on the amount of hot they're metering at the water heater.