There is a common misconception when it comes to the definition of a plumbing engineer.  The phrase "plumbing engineer" might just sound like a fancy way of saying "plumber" but the reality is that both occupations are very different.

In a nutshell, you call a plumber to fix a broken toilet, repair a leaky pipe or unclog a stubborn drain. Plumbers are a vital component of the professional engineering community, but a plumber just is not the same as a plumbing engineer.  

So what is a plumbing engineer, you ask? The easiest way to make the distinction is to think of the plumbing engineer as the guy who designs the system, and the plumber as the guy who maintains it. You'd call Jack the plumbing engineer to map out the hot and cold water system in the new home you're building; you'd call Joe the plumber to fix it when a gasket wears out.
The field of plumbing engineering relies on design, planning, creation and implementation of a plumbing system. A plumbing engineer draws up a pipe system for a new building or series of buildings, makes sure every pipe connection is solid and every delivery method is efficient. He chooses the right materials to make sure the system lasts for years with minimal maintenance. If you get a top-notch plumbing engineer, you probably won't need to call the plumber very often.

There are a number of web-based information resources for contractors, designers and architects that provide a good working definition for plumbing engineering companies in new jersey and nationwide:
The plumbing engineer new jersey is involved with systems that overlap into the mechanical, civil, and chemical engineering disciplines. The plumbing engineer is in a key position to influence the water efficiency, sustainable site, energy, fire protection, and pollution systems of a facility.

Plumbing engineers are qualified to oversee a wide array of public and private building projects:

• When a new shopping center needs a storm water management system, the engineering firm designing the center would hand the job over to a plumbing engineer.
• A plumbing engineer might work closely with a fire protection engineer to make sure a new sprinkler system is in good working order.
• An entire team of plumbing engineers might design a sewer system for a new housing development.