How to measure chlorine residual with a colorimeter
Chlorine residual testing confirms water stays disinfected. Follow your plant’s approved method and instrument instructions.
7 steps →How-to guides
Water Treatment Plant Operator How-To Guides
Step-by-step guides to common water treatment plant operator tasks: the practical side of the job.
Common water treatment plant operator tasks
Step-by-step overviews of tasks water treatment plant operators perform regularly. Use them to understand the job, prepare for training or refresh your memory.
How to backwash a filter
Backwashing cleans filter media so it can keep removing particles effectively. Follow your plant’s procedure.
7 steps →How to perform a 30-minute settleability test
The settleability test helps wastewater operators gauge how well activated sludge will settle in clarifiers.
7 steps →Before you practice
Learn every core task
Our Water Treatment Plant Operator training walks through these procedures and more, alongside vocabulary, safety and career-launch lessons.