Colorado Revised Statutes Title 40. Utilities § 40-4-109. Entry to premises--testing meters

(1) The commissioners and their officers and employees have power to enter upon any premises occupied by any public utility for the purpose of making the examination and tests and exercising any of the other powers provided for in articles 1 to 7 of this title and to set up and use on such premises any equipment necessary therefor. The agents and employees of such public utility have the right to be present at the making of such examinations and tests.

(2) Any consumer or user of any product, commodity, or service of a public utility may have any equipment used in the measurement thereof tested upon paying the fees fixed by the commission. The commission shall establish and fix reasonable fees to be paid for testing such equipment on the request of the consumer or user, the fee to be paid by the consumer or user at the time of his request but to be paid by the public utility and repaid to the consumer or user if the equipment is found defective or incorrect to the disadvantage of the consumer or user under such rules and regulations as may be prescribed by the commission.