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Top 25 Plumber Interview Questions

Question 1 of 28
What would have to change about your current job, for you to stay where you are?
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Question 2 of 28
What experience do you have with snaking clogged up pipes?
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How to Answer
This answer will depend a bit on your level of experience. You could give an approximate number to the interviewer or talk about your level of comfortability with this common plumbing task.

Answer Example
"I have been plumbing for the past 8 years so I can safely say that I have snaked hundreds of clogged pipes. I am very comfortable with a task such as this."
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Question 3 of 28
What training do you have in plumbing?
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How to Answer
This should be a simple and brief answer but also include some information on the continued training you have had.
Answer Example
"My training has included all of the in-class work required as well as my apprenticeship hours. I would like to continue my training to include more work on commercial properties."
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Question 4 of 28
Do you prefer your water mains be pvc or copper?
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How to Answer
As you may know, there is some debate between PVC and copper for the use in water mains. Be sure to pick a side and then explain your answer.

Answer Example
"I prefer copper pipes as I feel that PVC isn’t always the safest choice. Many people are concerned that the chemicals used in the production of CPVC may cause health issues when exposed to heat. I find copper to be a safer choice especially when there will be consumption of water from those pipes."
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Question 5 of 28
Have you ever changed a toilet before?
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Question 6 of 28
Have you ever installed a shower with multiple shower heads? How did you keep water pressure high?
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Question 7 of 28
What advantages are there for PVC water mains?
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Question 8 of 28
Have you ever plumbed an office building?
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Question 9 of 28
How many years experience do you have plumbing?
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Question 10 of 28
We run a credit report and background check are you ok with that?
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Author of Plumber Answers and Questions

Rachelle Enns
Rachelle Enns is an executive head-hunter and job search expert. Utilized by top executives from Fortune 100 & 500 companies like Fitbit, Microsoft, General Electric, Nestle, and more, she helps professionals position themselves in a competitive marketplace. Rachelle founded Renovate My Resume, a company that focuses on helping job seekers get their edge back. Renovate My Resume creates stand-out resumes, cover letters, LinkedIn profiles and professional summaries for new grads, all the way to corporate executives. Rachelle spends much of her time training career coaches, recruiters, and resume writers. She also holds interview workshops for students and interns, globally. For great tips and tricks, follow Rachelle on Instagram @_rachelle_e or @renovatemyresume.
First written on: 03/02/2014
Last modified on: 08/17/2018

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Question 11 of 28
What license do you have as a plumber?
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Question 12 of 28
How many houses have you plumbed before?
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Question 13 of 28
What do you enjoy most about being a plumber?
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Question 14 of 28
How long do you want to be a plumber?
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Question 15 of 28
If you installed a copper pipe next to the shower head, and realized you ran out of fasteners, knowing this will create a problem ten years down the road, what do you do?
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Question 16 of 28
If a customer complains their house has too little water pressure, what steps would you take to fix this problem?
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Question 17 of 28
What are the advantages for installing steel plumbing underneath a sink? In what cases would you do it?
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Question 18 of 28
Do you have any experience installing water based heating systems?
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Question 19 of 28
Do you have your own plumbing equipment?
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Question 20 of 28
How long has it been since you've had a leak with copper piping?
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Question 21 of 28
Who taught you mostly what you know in plumbing?
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Question 22 of 28
Is there any other trades you are looking to learn?
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Question 23 of 28
What is the worst thing you had to do as a plumber?
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Question 24 of 28
Have you ever installed PEX plumbing in a concrete floor?
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Question 25 of 28
Do you want to own your own plumbing business in the future?
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Question 26 of 28
How does your family feel about you being on call?
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Question 27 of 28
If a customer needs a new toilet installed, you remove the old one and find the floor to be rotting all around the toilet, what do you do?
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Question 28 of 28
If I were to ask a previous supervisor about your performance, what would they say?
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About Plumber

April 14th, 2017

Plumbers install, repair, and maintain pipes that carry water, gas, or sewage, as well as related appliances (e.g. water heaters). Plumbers work in homes, businesses, and factories. Plumbers must travel to the worksite and many are on call for emergency calls, meaning that you may be expected to work some evenings and weekends. Most localities require that a plumber be licensed to work. Plumbers in your locale may be unionized and you may need to find an apprenticeship through the union. Another possible path to becoming a plumber is to attend a technical school. The typical key performance area includes technical knowledge and skill and basic customer service skill.

You can find vacancies for plumbers in your local trade publications and newspapers, as well as online job boards that your local community frequents. The interview process can vary widely from company to company. A few common concerns include: the number of years of experience that you have; your ability to navigate the neighborhood(s) that you'll be providing service to; and your ability to speak, read, and write in English. Depending on the clientele that the company serves, you might be expected to speak another language as well. Punctuality, reliability, honesty, and diligence are valuable traits.

To prepare for the interview, think about examples that showcase your ability to meet deadlines and honor time obligations, as well as situations in which you were able to bring about a positive outcome due to your diligence and thoroughness. The plumbing profession has real impacts on public safety, so showing integrity and diligence will give your prospective employer confidence that you won't be reckless and put the company in legal danger. Adopt a polite, professional, and pleasant attitude to show that your company can trust you to be the face of the company out there in the field.

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