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Green Plumbing

Category - Caring for Our Water

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Which of the following is not a basic component of a rainwater catchment system?

Collection gutters
Overflow port
Ultraviolet purification system
Water filter

Explanation

Answer: C - An ultraviolet (UV) purification system is an add-on to rainwater catchment systems that provides a final step in creating reused water that is potable. Given that most rainwater use is for nonpotable purposes such as watering and toilet-flushing, the UV purification system is not necessary to the primary function of the rainwater catchment system.

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