Where there is more than one consumer supplied through a single service connection and single meter, the Department shall hold the applicant or other person agreed upon responsible for payment of all water furnished through the single service connection or one meter. However, where practicable to serve each consumer through a separate service connection, the Council may elect to install separate service connections and meters to each consumer at the cost and expense of the property owner or consumer and thereafter collect at the established meter rates for water supplied through each meter.