Course catalog
Everything is organized into four sections. Pick your section, then work the practice questions, lessons, math drills, and full timed practice exam inside each course.
Water Treatment
Entry Level (T-I)
Entry-Level Water Treatment
Entry-level surface and groundwater treatment prep for drinking water operators.
0 questions7 topics
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Wastewater Treatment
Advanced
Advanced Wastewater Treatment
Advanced biological treatment, nutrient removal, and water reclamation for higher-level wastewater operator certification.
5 questions6 topics
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Wastewater Treatment
Foundation
Foundation Wastewater Treatment
Foundation-level wastewater treatment operator certification prep.
0 questions7 topics
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Water Distribution
Advanced
Advanced Water Distribution
Water Distribution
Entry Level (DS-I)
Entry-Level Water Distribution
Everything you need to pass an entry-level drinking water distribution system operator exam.
10 questions7 topics
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Wastewater Collections
Entry Level
Entry-Level Wastewater Collections
Collection system operator prep: sewer hydraulics, lift stations, inspection and cleaning, infiltration and inflow, confined space safety, and regulations.
1 questions6 topics
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