California Wastewater Treatment Operator Practice Exam

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Prepare for the California Wastewater Treatment Operator Exam with our comprehensive quiz. Test your knowledge with multiple-choice questions covering various topics in wastewater treatment. Get ready to ace your exam!

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What are the main sources of domestic sewage in the collection system?

  1. household and commercial establishments

  2. industrial plants

  3. agricultural runoff

  4. stormwater drains

The correct answer is: household and commercial establishments

Possible explanation Domestic sewage in the collection system primarily comes from household and commercial establishments, as these are the main sources of human waste and used water. While industrial plants may also contribute to domestic sewage, they typically have their own separate waste management systems. Agricultural runoff and stormwater drains may contain contaminated water, but they are not considered primary sources of domestic sewage in the collection system.

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