What is the maximum flow rate of a water closet in gallons per flushing cycle?

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The maximum flow rate of a water closet, which is also referred to as a toilet, is set to standards to promote water conservation and efficiency. The current International Plumbing Code outlines that the maximum flow rate for a water closet should not exceed 1.6 gallons per flush. This standard was established to ensure that toilets use water wisely while still providing effective flushing performance.

This regulation reflects the ongoing efforts to reduce water consumption, particularly in places where water resources are limited or where there is a need for sustainable building practices. By limiting the flow rate to 1.6 gallons, toilets can effectively remove waste while minimizing the volume of water used, lead to significant water savings over time, especially when considering the number of flushes that occur in an average household.

Other choices reflect outdated standards or higher flow rates that do not align with current practices aimed at water conservation. Maintaining the standard of 1.6 gallons helps in managing water resources more effectively while ensuring adequate performance of plumbing fixtures.

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