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Case Studies

The NCCEH has assembled a directory of scenarios on various environmental health topics intended to sharpen the problem-solving skills of practitioners and students. We welcome your use of our feedback form to share new questions and scenarios.

Pool Chlorination and Closure Guidelines

Topics: Recreational Water, Water Location: General, Canada 

As an EH director at a local health authority, helping to review provincial guidelines on swimming pools, you want to know if scientific evidence supports pool closure orders when free available chlorine (FAC) is found to be at or above 10 ppm. Should the level be different and are there other factors to be considered for closure, instead of or in addition to FAC? What is Free Available Chlorine...

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