Understanding the Illinois Plumbing License and Certification Process
For plumbing contractors and aspiring plumbers in Illinois, understanding the licensing and certification process is essential. Whether you’re just starting as an apprentice or you’re ready to become a licensed plumbing contractor, it’s not only critical for legal compliance—it’s a smart investment in your career and your business. The Illinois Department of Public Health (IDPH) regulates plumbing licenses and certification, and maintaining compliance helps protect both plumbing professionals and the communities they serve.
Table of Contents
- Types of Plumbing Licenses in Illinois
- Application and Renewal Process for Plumbing Licenses
- Required Exams and Training
- Continuing Education Requirements for Plumbers in Illinois
- Penalties for Working Without a Valid Plumbing License
- Why Licensing Protects Contractors and Homeowners
- Summary: Illinois Plumbing License Requirements
- Call to Action for Plumbers and Contractors in Illinois
Types of Plumbing Licenses in Illinois
1. Apprentice Plumber
An Apprentice Plumber License is for individuals learning the trade under the supervision of a licensed plumber.
- Must be employed by a plumber licensed by the IDPH or by a registered apprenticeship program.
- May perform plumbing work under direct supervision.
- Is required to complete an approved apprenticeship program to progress to a journeyman or plumber license.
2. Licensed Plumber (Journeyman Level)
Often referred to simply as a “Licensed Plumber,” this license is awarded upon passing the Illinois plumber licensing exam. A journeyman plumber can work independently but is not licensed to run their own business unless also registered as a plumbing contractor.
- Required to pass the state plumbing licensing exam administered by the IDPH.
- Must have completed an approved apprenticeship (usually 4 to 5 years).
- Must be at least 18 years of age with a high school diploma or GED.
3. Plumbing Contractor
Plumbing Contractors in Illinois are individuals or business entities authorized to perform, manage, and contract plumbing work. This license is required if you’re running your own plumbing business.
- Must be or employ a Licensed Plumber (journeyman-level).
- Must register as a plumbing contractor with the IDPH.
- Must maintain liability insurance and a properly registered business.
For more on contractor requirements, visit: IDPH Plumbing Contractor Registration
Application and Renewal Process for Plumbing Licenses
Applying for a Plumbing License in Illinois
The Illinois Department of Public Health oversees plumber licensing. Follow these steps:
- Create an account on the IDPH licensure portal: Applications must be submitted online at IDPH’s Plumbing Licensing Portal.
- Submit your application: Provide required documentation, such as proof of apprenticeship, education, and work history.
- Pay all necessary fees: Application fees vary based on the license type.
- Register for and pass the plumber’s license exam (if applicable).
Renewal Process
- Licensed plumbers must renew annually, typically by April 30.
- Plumbing Contractor licenses also require annual renewal, including providing proof of business registration and insurance.
- Continuing education credits must be completed prior to renewal (see below).
For renewal forms and deadlines, visit: IDPH Plumbing License Renewal Info
Required Exams and Training
Apprentice to Licensed Plumber (Journeyman)
- Training: Completion of an IDPH-approved apprenticeship program (typically 4-5 years of on-the-job and classroom training).
- Exam: Pass a comprehensive state exam measuring plumbing code knowledge, safety protocols, and field installations.
Plumbing Contractor Certification in IL
- There is no separate exam for plumbing contractors, but you must ensure your employed licensed plumber is in current standing.
- Provide:
- Proof of liability insurance
- Proof of business registration with the Illinois Secretary of State
- Tools and resources for work oversight
Studying for the Exam
Several associations and trade schools in Illinois offer certification prep courses, including:
- Illinois Plumbing & Heating Contractors Association (IPHCA)
- Local UA Plumbers & Pipefitters Apprenticeship Programs
Continuing Education Requirements for Plumbers in Illinois
Illinois requires licensed plumbers to complete continuing education (CE) to renew their license and stay compliant with code updates, industry standards, and safety practices.
CE Requirements
- 4 hours of approved continuing education annually.
- These courses must be approved by the IDPH and typically cover topics like plumbing code updates, sustainability practices, and safety.
Where to Take CE Courses
- Local unions and trade schools often offer qualified programs.
- The IDPH also maintains a list of approved providers.
View Approved CE Courses: IDPH Approved Providers
Penalties for Working Without a Valid Plumbing License
Working without a valid plumbing license in Illinois is illegal and can lead to serious legal and financial consequences.
Possible Penalties
- Fines: Violators can be fined up to $1,000 per offense.
- Cease and desist orders and legal action.
- Revocation of future licensing eligibility.
- Loss of business reputation and trust.
It’s also considered a Class A misdemeanor in the state of Illinois to portray oneself as a licensed plumber without proper credentials. Furthermore, unlicensed work can invalidate insurance coverage and open you up to civil lawsuits if something goes wrong on a job.
Why Licensing Protects Contractors and Homeowners
Licensing isn’t just about meeting legal requirements—it protects everyone involved.
For Contractors
- Builds credibility and trust with customers.
- Opens doors to government and commercial contracts that require verified credentials.
- Helps reduce liability and insurance complications.
- Provides access to continuous training and industry resources.
For Homeowners
- Assures that the work meets safety and public health standards.
- Provides a clear level of accountability.
- Gives legal recourse in case of poor workmanship or damages.
A properly licensed plumber is a skilled, accountable professional—something that reassures customers and reinforces your business’s reputation.
Summary: Illinois Plumbing License Requirements
Here’s a quick checklist of what you need to become a licensed plumber or contractor in Illinois:
- ✅ Be at least 18 years of age with a high school diploma or GED
- ✅ Complete an IDPH-approved apprenticeship program (for journeyman)
- ✅ Apply through IDPH’s online portal
- ✅ Pass the Illinois plumber licensing exam
- ✅ Maintain annual licensure with continuing education (4 hours/year)
- ✅ Register and insure your plumbing business (for contractors)
- ✅ Renew license every year before posted deadline
- ✅ Never perform or advertise plumbing work without a valid license
Call to Action for Plumbers and Contractors in Illinois
If you’re currently working in the plumbing trade in Illinois, make sure your licensing and certification are up-to-date to protect your future and grow your business. If you’re unsure about the process or want to advance your career, consider reaching out to a licensed mentor or joining a professional plumbing association.
Need help understanding the IDPH plumber rules or finding continuing education for plumbers in IL? Contact your local union training center or the Illinois Plumbing & Heating Contractors Association (IPHCA). Staying compliant doesn’t just keep you out of trouble—it sets you apart as a true professional.
✅ Stay legal
✅ Build customer trust
✅ Get access to better job opportunities
Don’t risk your hard-earned reputation. Check your license status today!
Stay licensed. Stay trusted. Grow your reputation the right way.
Got questions? Contact us at (555) 123-4567
Follow us on Facebook and Instagram: @IllinoisProPlumbers
Keywords Applied: Illinois plumbing license, plumbing contractor certification IL, IDPH plumber rules, how to get a plumber’s license in Illinois, continuing education for plumbers IL
Categories: Plumbing License, Illinois, Plumbing Contractor Compliance, Education