ME Water Operator Practice Questions - Maine Water Wastewater Operator Certification Exam

Maine wastewater treatment plants are classified into what grades?

Grades A through D Grades I through V for biological systems, plus Grades I-III for physical/chemical and Grades I-II for spray irrigation Classes 1 through 3 only Only one universal classification

Correct Answer:

Grades I through V for biological systems, plus Grades I-III for physical/chemical and Grades I-II for spray irrigation

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