CWEA Collections Grade 1 Exam | Verified
Questions & Correct Answers | 100%
Correct | Grade A | Latest
Update
Question 1: The primary purpose of a wastewater collection system is to:
Answer: Transport wastewater to treatment facilities
Rationale: Prevents environmental contamination; ensures public health (CWEA Study Guide,
Ch. 1).
Question 2: The main component of a gravity sewer system is:
Answer: Pipes
Rationale: Convey wastewater using slope and gravity (CWEA, Ch. 2).
Question 3: Common sewer pipe materials include: (Select all that apply)
Answer: PVC; Vitrified clay; Ductile iron
Rationale: Durable, corrosion-resistant materials (CWEA, Ch. 2).
Question 4: A manhole’s primary function is to:
Answer: Provide access for maintenance
Rationale: Allows inspection and cleaning (CWEA, Ch. 3).
Question 5: The most common cause of sewer blockages is:
Answer: Fats, oils, and grease (FOG)
Rationale: Accumulates, causing clogs (CWEA, Ch. 4).
Question 6: A confined space entry requires:
Answer: Permit and air monitoring
Rationale: OSHA regulations; ensures safety (CWEA, Ch. 5).
, Question 7: The purpose of a lift station is to:
Answer: Pump wastewater to higher elevations
Rationale: Used when gravity flow is insufficient (CWEA, Ch. 2).
Question 8: A common cleaning method for sewers is:
Answer: High-pressure jetting
Rationale: Removes debris effectively (CWEA, Ch. 4).
Question 9: True or False: PPE is optional during sewer maintenance.
Answer: False
Rationale: PPE (gloves, boots, etc.) is mandatory for safety (CWEA, Ch. 5).
Question 10: The minimum slope for a 6-inch sewer pipe is:
Answer: 1%
Rationale: Ensures adequate flow velocity (CWEA, Ch. 2).
Question 11: A sewer inspection method includes:
Answer: Closed-circuit television (CCTV)
Rationale: Identifies defects and blockages (CWEA, Ch. 3).
Question 12: The purpose of a flow meter in a sewer system is to:
Answer: Measure wastewater volume
Rationale: Monitors system capacity (CWEA, Ch. 3).
Question 13: A common hazard in sewer work is: (Select all that apply)
Answer: Hydrogen sulfide gas; Confined spaces; Traffic
Rationale: Toxic gases, oxygen deficiency, and vehicle risks (CWEA, Ch. 5).
Questions & Correct Answers | 100%
Correct | Grade A | Latest
Update
Question 1: The primary purpose of a wastewater collection system is to:
Answer: Transport wastewater to treatment facilities
Rationale: Prevents environmental contamination; ensures public health (CWEA Study Guide,
Ch. 1).
Question 2: The main component of a gravity sewer system is:
Answer: Pipes
Rationale: Convey wastewater using slope and gravity (CWEA, Ch. 2).
Question 3: Common sewer pipe materials include: (Select all that apply)
Answer: PVC; Vitrified clay; Ductile iron
Rationale: Durable, corrosion-resistant materials (CWEA, Ch. 2).
Question 4: A manhole’s primary function is to:
Answer: Provide access for maintenance
Rationale: Allows inspection and cleaning (CWEA, Ch. 3).
Question 5: The most common cause of sewer blockages is:
Answer: Fats, oils, and grease (FOG)
Rationale: Accumulates, causing clogs (CWEA, Ch. 4).
Question 6: A confined space entry requires:
Answer: Permit and air monitoring
Rationale: OSHA regulations; ensures safety (CWEA, Ch. 5).
, Question 7: The purpose of a lift station is to:
Answer: Pump wastewater to higher elevations
Rationale: Used when gravity flow is insufficient (CWEA, Ch. 2).
Question 8: A common cleaning method for sewers is:
Answer: High-pressure jetting
Rationale: Removes debris effectively (CWEA, Ch. 4).
Question 9: True or False: PPE is optional during sewer maintenance.
Answer: False
Rationale: PPE (gloves, boots, etc.) is mandatory for safety (CWEA, Ch. 5).
Question 10: The minimum slope for a 6-inch sewer pipe is:
Answer: 1%
Rationale: Ensures adequate flow velocity (CWEA, Ch. 2).
Question 11: A sewer inspection method includes:
Answer: Closed-circuit television (CCTV)
Rationale: Identifies defects and blockages (CWEA, Ch. 3).
Question 12: The purpose of a flow meter in a sewer system is to:
Answer: Measure wastewater volume
Rationale: Monitors system capacity (CWEA, Ch. 3).
Question 13: A common hazard in sewer work is: (Select all that apply)
Answer: Hydrogen sulfide gas; Confined spaces; Traffic
Rationale: Toxic gases, oxygen deficiency, and vehicle risks (CWEA, Ch. 5).
