General

1. The official census must be used to determine the population served by a water treatment facility, water distribution and storage system, wastewater treatment facility, or wastewater collection and transfer system if population equivalent data is not available. 2. The total number of people served on an annual average daily basis must be used to determine population served by a water treatment facility, water distribution and storage system, wastewater treatment facility, or wastewater collection and transfer system if official census data is not available. 3. Facilities or systems with sufficiently complicated processes may be raised to a classification higher than that indicated by population equivalent or census. 4. Any facility which may have a combination of treatment processes, some of which may be in different facility classes, must be classified based on the treatment process which requires the highest numerical classification. 5. An operator who has direct responsible charge shall hold a certificate that is at least equal to the classification of the facility or system where the operator is employed.