CWEA Collections Grade 2 Journey/Analyst 2025 – 400 Free Practice Questions to Pass the Exam

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What does "hydraulic capacity" refer to in a collection system?

The amount of sewage the system can store

The ability to transport wastewater without surcharging

Hydraulic capacity in a collection system specifically refers to the ability to transport wastewater efficiently without causing surcharging. Surcharging occurs when the flow of wastewater exceeds the capacity of the pipes, leading to potential overflows or backups. Therefore, the hydraulic capacity is a critical aspect of sewer design, ensuring that the pipes can handle expected peak flows without exceeding their limits. It encompasses factors such as the diameter of the pipes, the slope of the sewer lines, and the materials used, which all contribute to the effective movement of wastewater through the system. This concept is vital for maintaining the integrity of the collection system and preventing environmental contamination.

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The pressure within the sewer lines

The rate of sewage treatment

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