Massachusetts Plumbers Journeyman Practice Exam

How can the waste for a domestic type dishwasher be managed?

1. By directly connecting it to the sewer line

2. By letting it drain into the yard

3. By separately trapping it or connecting to a food waste grinder

4. By only using disposable dishware

The correct answer is: By separately trapping it or connecting to a food waste grinder

The correct answer involves managing the waste from a domestic dishwasher by separately trapping it or connecting it to a food waste grinder. This method is effective because it allows for proper drainage and waste management. A trap helps to prevent sewer gases from entering the home and ensures that solid waste does not clog the plumbing system. Connecting to a food waste grinder facilitates the grinding of food particles, allowing them to be easily transported through the plumbing system into the sewer, which enhances hygiene and reduces clogs. Inappropriate methods, such as connecting directly to the sewer line, could lead to issues like backflow or contamination. Letting the dishwasher drain into the yard would create problems, as it could cause unsanitary conditions and violate local health codes. Relying on disposable dishware does not address the plumbing aspect at all and promotes waste rather than proper management of dishwashing waste. Thus, proper plumbing techniques centered on traps and food waste disposal systems are essential for efficient dishwasher waste management.