Collections certification levels
Wastewater Collection Class 1 — Entry-Level Operator
Entry-level practice for the ABC/WPI Wastewater Collection Class 1 exam — pumps and lines, manholes, CCTV and I&I, lift-station basics, monitoring, and safety, with entry-level math.
Class 2Wastewater Collection Class 2 — Operating Operator
Operating-level practice for the ABC/WPI Collection Class 2 exam — pump curves and troubleshooting, CCTV/CIPP rehab, lift-station controls, I&I source-finding, odor control, and Class 2 math.
Class 3Wastewater Collection Class 3 — Senior Operator
Senior-level practice for the ABC/WPI Collection Class 3 exam — NPSH and pump systems, force-main surge, condition assessment and trenchless rehab, sulfide/odor programs, SSO/CMOM, and Class 3 math.
Class 4Wastewater Collection Class 4 — Manager / Superintendent
Management-level practice for the ABC/WPI Collection Class 4 exam — capacity and capital planning, asset management, CMOM and NPDES/SSO compliance, resilience planning, and Class 4 cost math.
Find your state's requirements
Class names and exam rules vary by state. See how these tests map to your state's collections operator classes on the state pages.
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