Plumber Red Seal · Question
During a routine inspection, a plumber observes a cross-connection in a hospital between the potable water supply and a non-potable cooling tower system, protected only by a single check valve. What is the most immediate concern regarding this setup?
A direct cross-connection between potable and non-potable systems, especially with inadequate backflow protection, poses a significant risk for the contaminatio
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Question: During a routine inspection, a plumber observes a cross-connection in a hospital between the potable water supply and a non-potable cooling tower system, protected only by a single check valve. What is the most immediate concern regarding this setup?
Answer options:
- Increased water consumption in the cooling tower.
- Reduced water pressure in the potable water supply. ✅ Potential contamination of the potable water system.
- Faster corrosion of the potable water piping.
Correct answer: Potential contamination of the potable water system.
Explanation: A direct cross-connection between potable and non-potable systems, especially with inadequate backflow protection, poses a significant risk for the contamination of the potable water supply. The single check valve provides insufficient protection against back-siphonage or back-pressure.
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