Technical knowledge base
Learn the concepts behind water and wastewater operator exams.
Short, practical lessons for beginners. Start with the discipline you are studying, then work through the process terms, equipment, safety issues, and operator checks that show up in training and certification prep.
10 lessons
Water Treatment
Core drinking-water treatment concepts: how raw water becomes safe drinking water through clarification, filtration, disinfection, monitoring, and residual control.
10 lessons
Water Distribution
Distribution lessons cover pipes, pressure, storage, pumps, valves, backflow protection, disinfection, and field operations that keep finished water moving safely.
10 lessons
Wastewater Treatment
Wastewater treatment lessons explain the biological, physical, chemical, and process-control concepts operators use to clean used water before discharge or reuse.
10 lessons
Collection Systems
Collection-system lessons cover sewers, lift stations, inflow and infiltration, cleaning, inspection, safety, and emergency response.