Colorado Revised Statutes Title 40. Utilities § 40-3-101. Reasonable charges--adequate service

(1) All charges made, demanded, or received by any public utility for any rate, fare, product, or commodity furnished or to be furnished or any service rendered or to be rendered shall be just and reasonable. Every unjust or unreasonable charge made, demanded, or received for such rate, fare, product or commodity, or service is prohibited and declared unlawful. Rates and charges demanded or received by any public utility for gas transportation service furnished or to be furnished shall not be deemed to be unjust or unreasonable so long as said rate or charge is no greater than a maximum rate and no lower than a minimum rate determined by the commission (or, in the case of a municipal utility, by the governing body of the municipal utility in accordance with sections 40-3-102 and 40-3.5-102) to be just and reasonable, and the provision of such gas transportation service at such rates or charges shall not constitute per se unjust discrimination or the granting of a preference. Nothing in this subsection (1) shall limit or restrict the commission's authority to regulate rates and charges, correct abuses, or prevent unjust discrimination.

(2) Every public utility shall furnish, provide, and maintain such service, instrumentalities, equipment, and facilities as shall promote the safety, health, comfort, and convenience of its patrons, employees, and the public, and as shall in all respects be adequate, efficient, just, and reasonable.