Massachusetts Plumbers Journeyman Practice Exam

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Flushometer toilets that are floor mounted or wall mounted in residential buildings should use a maximum of how many gallons per flush?

1.0 gallons (four liters)

1.3 gallons (five liters)

1.6 gallons (six liters)

Flushometer toilets that are installed in residential buildings, whether they are floor mounted or wall mounted, should use a maximum of 1.6 gallons per flush. This is in accordance with water efficiency standards and regulations in Massachusetts. By limiting the maximum water usage to 1.6 gallons per flush, it helps in conserving water while still providing effective flushing performance. This restriction helps to reduce water waste and promotes sustainable practices in plumbing systems.

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1.9 gallons (seven liters)