Free PDF Wastewater Treatment Level 1 - Practice Exam Questions and Answers
These are difficult Level 1 Wastewater Treatment Process questions. Operators studying for their level one exam should not expect to get them all right.
Getting 70% of these questions correct is a good result. There are no safety questions included in this question set (which operators typically score highest on).
The pass grade for the level one exam is 70%, with a typical "pass rate" of 60-70%.
If you are looking for more studying resources, check out our Level 1 Exam preparation guides.
The PDF includes questions on: Lagoons, Chlorine, Pumps, Preliminary Treatment, Primary Treatment, Tertiary Treatment