The landlord must either switch the shared meter account to the landlord's name, or rewire or repipe so that you are billed only for the service you receive. Generally, the necessary changes must be made within 30 days after the landlord knew or should have known a shared meter existed.
You are required to give the utility company your landlord's name and address if you have it. If you fail to allow the utility investigator into your apartment the investigation will end. The landlord is required to give the investigator access to the building. If the landlord does not provide access the utility company must conclude that there is a shared meter and bill the landlord.
If there is a shared meter, the utility company will put the account in the landlord's name and bill the landlord for all the shared meter charges. All charges to you will be cancelled. If you paid shared meter charges that the landlord owed and paid, you can get a refund from the utility company. The landlord cannot try to bill or collect shared utility charges or refunds from you.
If a utility company reinspection reveals that the meter is no longer shared, the account will be switched back into your name, on 15 days notice to you.
You can prevent termination even if your landlord does not pay by paying current charges (meaning the unpaid amount for the two months prior to the termination date) and deducting these payments from your rent. By paying current charges you will not be responsible for future bills. Be sure to keep receipts of all payments.