Arkansas Wastewater Collection: Advanced Operator Topics (Classes 2-4)
The Arkansas Water Environment Association's ABC-approved Collection System Operator certification advances operators through Class 1-4 based on practical experience and exam performance. Higher classes weight system-level management topics far more heavily than entry-level maintenance tasks.
Inflow & Infiltration (I/I)
I/I is one of the most consequential collection-system problems in Arkansas's older sewer networks: excess groundwater/stormwater entering the sanitary system through defective pipe joints, manholes, and illegal stormwater connections drives up treatment plant hydraulic loading and SSO risk during wet weather. Advanced-class operators should distinguish rainfall-dependent inflow from steady infiltration using flow monitoring data, and prioritize rehabilitation (CIPP lining, manhole sealing, poi