(1) "Board" means the water and wastewater facility operators certification board.

(2) "Certificate" means the certificate of competency issued by the board stating that the operator named thereon has met the requirements for the specified operator classification of the certification program.

(3) "Certified operator" means the person who has responsibility for the operation of any water and wastewater facility covered under this article and is certified in accordance with the provisions of this article.

(4) "Department" means the Colorado department of public health and environment.

(4.3) "Division" means the water quality control division within the department of public health and environment.

(4.5) "Domestic wastewater treatment facility" means any facility or group of units used for the treatment of domestic wastewater or for the reduction and handling of solids and gases removed from such wastes, whether or not the facility or group of units is discharging into state waters. "Domestic wastewater treatment facility" specifically excludes on-site wastewater treatment systems.

(4.7) "Industrial wastewater treatment facility" means any facility or group of units used for the pretreatment, treatment, or handling of industrial waters, wastewater, reuse water, and wastes that are discharged into state waters. "Industrial wastewater treatment facility" includes facilities that clean up contaminated groundwater or spills; except that such term does not include facilities designed to operate for less than one year or facilities with in-situ discharge.

(4.8) "Small system" means a water or wastewater facility that serves a population of three thousand three hundred or less.

(4.9) "Wastewater collection system" means a system of pipes, conduits, and associated appurtenances that transports domestic wastewater from the point of entry to a domestic wastewater treatment facility. The term does not include collection systems that are within the property of the owner of the facility.

(5) "Wastewater treatment facility" means either a domestic wastewater treatment facility or an industrial wastewater treatment facility.

(5.3) "Water and wastewater facility" means a water treatment facility, wastewater treatment facility, water distribution system, or wastewater collection system.

(6) "Water distribution system" means any combination of pipes, tanks, pumps, or other facilities that delivers water from a source or treatment facility to the consumer.

(7) "Water treatment facility" means the facility or facilities within the water distribution system that can alter the physical, chemical, or bacteriological quality of the water.