Massachusetts Plumbers Journeyman Practice Exam 2025 - Free Plumber Journeyman Practice Questions and Study Guide

In Massachusetts, the minimum discharge capacity required for a sewage-ejector pump in single-family dwellings typically needs to meet the demands of the household's wastewater flow. A capacity of 20 gallons per minute (GPM) is generally recognized as sufficient to handle typical wastewater discharge from various plumbing fixtures in a single-family home, including kitchen sinks, dishwashers, and bathrooms.

This capacity ensures that the sewage-ejector pump can efficiently manage peak usage times, reducing the risk of backups or overflows. The requirement is designed to promote adequate drainage and maintain sanitary conditions within the dwelling. A capacity of 20 GPM strikes a balance between efficiency and reliability in handling household waste, which is why it is often established as the minimum standard for sewage-ejector pumps in this context.