CWEA Collections Grade 1 Exam 2025/2026 | 100+ Solved Questions with Answers | Manhole Safety, H2S, Traffic Zones, Equipment Use | Wastewater Certification

This document is a complete exam preparation resource for the CWEA Collections Grade 1 Certification for the 2025/2026 cycle, featuring over 100 multiple-choice questions with correct answers. It is tailored to entry-level professionals in the wastewater field seeking CWEA certification in Collection System Maintenance. The exam content closely follows CWEA's core Grade 1 learning objectives, covering: Manhole entry safety: barricade setup, gas monitoring, oxygen alarm levels, confined space protocols Hazard detection: toxic gases like hydrogen sulfide (H₂S), oxygen deficiency, and hazard labeling Traffic control procedures: use of cones, signs, flaggers, and buffer zones when operating in or near roads Personal Protective Equipment (PPE): gloves, goggles, earplugs, and grinder safety Tools and equipment: grit shovel, power rodder, diamond-blade saws, backhoes, tampers, and scrapers Collection system operations: sewer line maintenance, flow measurement, wet well volume calculation, and equipment checks Math and conversions: wet well volume, cubic feet per second to gallons, and orifice plate functions OSHA safety compliance: Hazard Communication Sheets, MSDS, labeling standards, and supervisor roles Pest awareness: black widow spiders, scorpions, and safe inspection of confined environments This document is perfect for: Entry-level collection system operators preparing for CWEA Grade 1 Public works and utility technicians Environmental and wastewater technician training programs Trade school or municipal operations coursework On-the-job training and safety refreshers in sewer maintenance Keywords: CWEA Grade 1, collection system operator, sewer maintenance, manhole entry, toxic gas detection, confined space, hydrogen sulfide, PPE, trench safety, grit shovel, wet well volume, MSDS, OSHA hazard communication, flow calculation, traffic zone control, CWEA certification