CWEA Collection Systems Maintenance
Grade 2 | 74 Practice Questions &
Complete Detailed Answers | 100% Correct
| A Grade
This California Water Environment Association (CWEA) offers Collection System
Maintenance (CSM) certification exams for Grades 1 to evaluate the knowledge, skills,
and abilities (KSAs) of wastewater professionals. This exam is designed for
professionals working in the field, with a focus on safety, maintenance, and operation
of wastewater infrastructure.
Grade 2 Exam Overview
Format: Multiple-choice, computer-based tests, with 100 (±40).questions & Single
best answers
Focus: This exam cover introductory to intermediate knowledge of cleaning,
maintenance, lift stations, and, most importantly, safety.
Topics Covered:
Safety & Regulations: PPE, traffic control zones (setup and terminology), confined
space entry (permit-required), and OSHA regulations.
Maintenance & Cleaning: Identifying tools like power rodders, porcupine, root saws,
and chain pipe cutters.
1
, Operations: Sewer cleaning, manhole inspection, lift station operations, and reading
maps/as-builts.
Basic Calculations: Introductory math related to volumes, flows, and chemical usage.
Key Distinctions
Grade 2: Requires more experience and focuses on a deeper understanding of
troubleshooting, maintenance, and repair. (Ultimate Guide for YR. 2026/2027)
Actual Exam Preparation
• Resources: Candidates are advised to use the official CWEA Collection System
Maintenance Candidate Handbook, which includes a detailed list of references.
• Study Areas: Focus on hazard identification, hydrogen sulfide management, and, for
Grade 2, more complex scenarios, such as troubleshooting equipment and identifying
sewer defects.
• Validation: The exams were updated in 2023–2024 to better reflect real-world job tasks.
Quiz_________________?
Why are gasoline and volatile solvents objectionable when
present in a sewer? -
Answer☑️
They produce an explosion hazard
Quiz_________________?
2
, You should never attempt to install, troubleshoot, maintain, repair,
or replace electrical equipment unless: -
Answer☑️
You know what you are doing, are qualified, and are authorized.
Quiz_________________?
How many different areas of traffic zones are there when working
in roadways? -
Answer☑️
Five
Quiz_________________?
Why should hydrogen sulfide be controlled? -
Answer☑️
To protect sewers and structures from corrosion
Quiz_________________?
Personnel entering a Permit Required Confined Space must have
the following training: -
Answer☑️
3
Grade 2 | 74 Practice Questions &
Complete Detailed Answers | 100% Correct
| A Grade
This California Water Environment Association (CWEA) offers Collection System
Maintenance (CSM) certification exams for Grades 1 to evaluate the knowledge, skills,
and abilities (KSAs) of wastewater professionals. This exam is designed for
professionals working in the field, with a focus on safety, maintenance, and operation
of wastewater infrastructure.
Grade 2 Exam Overview
Format: Multiple-choice, computer-based tests, with 100 (±40).questions & Single
best answers
Focus: This exam cover introductory to intermediate knowledge of cleaning,
maintenance, lift stations, and, most importantly, safety.
Topics Covered:
Safety & Regulations: PPE, traffic control zones (setup and terminology), confined
space entry (permit-required), and OSHA regulations.
Maintenance & Cleaning: Identifying tools like power rodders, porcupine, root saws,
and chain pipe cutters.
1
, Operations: Sewer cleaning, manhole inspection, lift station operations, and reading
maps/as-builts.
Basic Calculations: Introductory math related to volumes, flows, and chemical usage.
Key Distinctions
Grade 2: Requires more experience and focuses on a deeper understanding of
troubleshooting, maintenance, and repair. (Ultimate Guide for YR. 2026/2027)
Actual Exam Preparation
• Resources: Candidates are advised to use the official CWEA Collection System
Maintenance Candidate Handbook, which includes a detailed list of references.
• Study Areas: Focus on hazard identification, hydrogen sulfide management, and, for
Grade 2, more complex scenarios, such as troubleshooting equipment and identifying
sewer defects.
• Validation: The exams were updated in 2023–2024 to better reflect real-world job tasks.
Quiz_________________?
Why are gasoline and volatile solvents objectionable when
present in a sewer? -
Answer☑️
They produce an explosion hazard
Quiz_________________?
2
, You should never attempt to install, troubleshoot, maintain, repair,
or replace electrical equipment unless: -
Answer☑️
You know what you are doing, are qualified, and are authorized.
Quiz_________________?
How many different areas of traffic zones are there when working
in roadways? -
Answer☑️
Five
Quiz_________________?
Why should hydrogen sulfide be controlled? -
Answer☑️
To protect sewers and structures from corrosion
Quiz_________________?
Personnel entering a Permit Required Confined Space must have
the following training: -
Answer☑️
3
