How much water does a new style flush type water closet take to flush?

The correct answer reflects the current standards for water usage in flush type water closets, particularly in the United States. Newer models, especially those designed to be more efficient and environmentally friendly, typically use 1.6 gallons per flush. This low-flow standard was established to conserve water resources and has been widely adopted since the 1990s.

When considering water efficiency, modern toilets have been designed to meet these lower thresholds while maintaining effective flushing performance. Therefore, options that indicate higher water usage, such as 3 gallons, 3-1/2 gallons, and 5 gallons, represent older styles and less efficient models that are not commonly installed in new construction or renovations aimed at sustainability.

In summary, the answer indicates the standard specification for contemporary flush toilets aimed at reducing water consumption effectively.