Question 2001 of 229 · California Water Distribution Operator Exam
What is backflow?
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Correct answer to question 2001
- D: Flow in the reverse direction of normal flow into the potable system
Explanation
Backflow reverses the normal direction and can bring contaminants into drinking water. It happens through back-siphonage or back-pressure.
More questions: Distribution System Design and Hydraulics
- 2002Back-siphonage occurs when which condition exists in the supply piping?
- 2003Back-pressure backflow occurs when:
- 2004Which backflow prevention method provides the highest level of protection?
- 2005Under the State Water Board's Cross-Connection Control Policy Handbook, what is the minimum vertical air-gap separation between the supply outlet and the flood level of the receiving vessel?
- 2006Which assembly is generally required to protect the public water supply from a high-hazard cross-connection that may see back-pressure?
- 2007A garden hose submerged in a bucket of fertilizer solution and connected to a hose bib is an example of what?