North Dakota Century Code Title 23.1. Environmental Quality § 23.1-07-02. Definitions

1. “Certificate” means a certificate of competency issued by the department stating that the operator holding the certificate meets the requirements for the specified operator grade in the certification program.

2. “Department” means the department of environmental quality.

3. “Ground water under the direct influence of surface water” means water beneath the surface of the ground with significant occurrence of insects or other macro-organisms, algae, or large-diameter pathogens such as Giardia lamblia, or significant and relatively rapid shifts in water characteristics such as turbidity, temperature, conductivity, or pH which closely correlate to climatological or surface water conditions.

4. “Operator” means the person in direct responsible charge of the operation of a water treatment plant, a water distribution system, a wastewater treatment plant, or a wastewater collection system.

5. “Population equivalent” for a wastewater collection system or treatment plant means the calculated population that would normally contribute the same amount of biochemical oxygen demand per day computed on the basis of seventeen hundredths of one pound [77.11 grams] of five-day, sixty-eight-degree Fahrenheit [20-degree Celsius] biochemical oxygen demand per capita per day.

6. “Wastewater collection system” means that portion of the wastewater disposal system in which wastewater is conveyed to a wastewater treatment plant from the premises of a contributor.

7. “Wastewater disposal system” means the system of pipes, structures, and facilities through which wastewater from a public sewer system or industry is collected and treated for final disposal. The system must serve a population equivalent of twenty-five or more persons.

8. “Wastewater treatment plant” means that portion of the wastewater disposal system used for the treatment and disposal of wastewater and the solids removed from wastewater.

9. “Water distribution system” means that portion of the water supply system in which water is conveyed from the water treatment plant or other supply point to the premises of the consumer.

10. “Water supply system” means the system of pipes, structures, and facilities through which a public water supply is obtained, treated, and sold or distributed for human consumption or household use. The system must have at least fifteen service connections or regularly serve an average of twenty-five or more persons for at least sixty days a year.

11. “Water treatment plant” means that portion of the water supply system that in some way alters the physical, chemical, or bacteriological quality of the water.