Can the owner of an apt.?
It depends on the municipality and the utility company. I have done it in my city with a trailer park. It was a nightmare. Billing, reading, fixing leaks, etc. I wasnt doing it as a profit, so it was a bad business situation. The cost of installing individual meters fell to me and the cost was too great relative to the value of the property. I was stuck for many years. I sold it, and am happy that I did.