Which class corresponds to a facility capacity of 50,000 to 2,000,000 gpd with 12 CEUs?

• A. Class 4
• B. Class 3
• C. Class 2
• D. Class 1

Answer: (C)

Certification levels for wastewater operators are defined by the facility’s design flow (gallons per day) and the related continuing education (CEU) requirements. As the design flow of a facility sits in mid-range, the corresponding credential is set to cover mid-sized operations, and the CEU requirement for maintaining that credential is 12.

So for a facility capacity of 50,000 to 2,000,000 gpd, the appropriate class is the mid-range credential, which matches the 12 CEUs needed. This reflects the idea that mid-sized facilities require a mid-level certification and the specified CEUs to keep it active. Larger facilities would demand a higher class with more CEUs, while smaller facilities would align with a lower class and fewer CEUs.