Conn. Gen. Stat. § 16 § 16-262x

(a) A person seeking to terminate electric, gas, telecommunications or water service to a residential dwelling shall provide to the electric distribution, gas, telecommunications or water company, electric supplier or municipal utility providing such service either (1) identification, as defined in section 16-49e, (2) the password previously provided by the customer of record for such service, (3) the customer code provided by the company, supplier or utility, or (4) other reasonable identification method established by the company, supplier or utility sufficient to establish that the person authorizing the termination is the customer of record or the customer's authorized representative. Such company, supplier or utility shall not terminate service if the person does not provide such reasonable identification.

(b) If a person or entity, other than a customer of record or the customer's authorized representative, seeks to terminate electric, gas, telecommunications or water service to a residential dwelling, the company, supplier or utility shall not terminate service unless, nine or more days prior to the requested termination date, the company, utility or supplier sends a notification letter to the customer of record at the customer's last-known address.

(c) Notwithstanding the requirements of this section, an electric distribution, gas, telecommunications or water company, electric supplier or municipal utility may terminate service at any time (1) upon request of a state or local fire or police authority, (2) upon determination by the company, supplier or utility that failure to terminate the service may adversely impact safety or the public health, or (3) upon the company's, supplier's or utility's compliance with applicable statutes or Public Utilities Regulatory Authority regulations governing termination of service not requested by the customer.