OITtraining2 Published November 7, 2017 at × in Finding a job that fits you, pays well AND is meaningful is amazing. If you like freedom and change you might like operating a wastewater treatment plant. We’ll help you find out – and pay to train you. ← Previous Next → OITs work work side-by-side with certified operators, learning on the job, through hands on training. OITs work work side-by-side with certified operators, learning on the job, through hands on training.