Licensing and Certification Requirements for Plumbers in Illinois
For licensed plumbers and plumbing contractors across Illinois—from Chicago to Carbondale—understanding and complying with the state’s licensing and certification requirements is essential. Whether you’re starting your journey as an apprentice or are a seasoned plumbing contractor seeking renewal or continuing education, staying compliant with Illinois plumbing license regulations isn’t just a legal responsibility—it’s a professional necessity that protects you, your business, and your customers.
Types of Plumbing Licenses in Illinois
The State of Illinois, through the IDPH, issues several levels of plumbing licensure based on experience and qualifications. It’s critical to understand the distinctions, as each level comes with different responsibilities and legal requirements.
1. Plumbing Apprentice License
This is the entry-level license for anyone starting a plumbing career in Illinois. As an apprentice, you work under the supervision of a licensed plumber while completing your training.
- Requirements:
- Must be at least 16 years old
- Provide proof of sponsorship from a licensed plumber, plumbing contractor, or approved apprenticeship program
- Submit a complete application with fees to IDPH
- Renew annually
2. Licensed Plumber (Journeyman)
After completing apprenticeship requirements, individuals move on to become licensed plumbers. This license allows you to work independently, under your own license or for a plumbing contractor.
- Requirements:
- At least 4 years of experience as an apprentice
- Completion of classroom instruction (typically through a union or trade school program)
- Pass the State of Illinois Plumbing License Exam administered by IDPH
- Submit application with verification of hours and education
3. Plumbing Contractor License
Licensed contractors can run a business, employ other plumbers, and are legally responsible for all plumbing work performed under their business.
- Requirements:
- Must hold a current Illinois plumber license
- Proof of liability insurance and surety bond
- Register business with Illinois Secretary of State
- Submit additional application and fees to IDPH
- Annual renewal required
For full details, view the official IDPH page on Plumber Licensing.
How to Apply or Renew a Plumbing License in Illinois
Understanding the application and renewal process is critical for keeping your license active and avoiding fines or penalties. Whether you’re getting started or are maintaining a plumbing contractor certification in IL, here’s what you need to know.
Application Steps
To get a plumber’s license in Illinois, follow these typical steps depending on license type:
- Determine your eligibility — Ensure you meet age, training, and experience requirements.
- Complete and submit the application — Include sponsorship information, education transcripts, and required documentation.
- Pay applicable fees — Varies depending on license type.
- Schedule and pass the exam (if applicable)
Applications are available on the Illinois Department of Public Health website.
Renewal Requirements
Plumber licenses must be renewed annually, typically prior to May 1 of each licensing year. Renewal requires:
- Completion of continuing education requirements (detailed below)
- Submission of renewal application
- Payment of annual licensing fees
- Updated contact and insurance information (for contractors)
Failure to renew on time can lead to license suspension, late fees, or requirement to retake the state exam.
Plumbing Exams and Required Training in Illinois
Passing the Illinois plumber licensing exam is a critical step in becoming a journeyman plumber. Here’s a breakdown of what to expect and how to prepare:
State Plumber Licensing Exam
- Who Must Take It: Anyone applying for their initial plumber license (formerly journeyman).
Content Covered:
- Illinois Plumbing Code
- Mathematics and blueprint reading
- Installation practices and safety standards
- Waste, drainage, gas, and vent systems
Format: Written exam, often followed with a hands-on practical section
Administered By: IDPH or its approved testing centers
Recommended Training Resources
- Illinois-approved apprentice and trade programs
- Plumbing Unions (e.g., Plumbers Local 130)
- Technical colleges or training academies
- On-the-job mentoring from licensed plumbers
Those preparing for plumbing contractor certification in IL should also study small business management and legal responsibility topics relevant to plumbing operations.
Continuing Education for Plumbers in Illinois
Continuing education is required annually to ensure plumbers stay updated with code changes, safety practices, and technology innovations in the field.
General Requirements
Hours Required:
- 4 hours per year of approved continuing education
Topics Covered:
- Updates to Illinois Plumbing Code
- Industry best practices and safety
- Emerging plumbing technology
Where to Attend:
- IDPH-approved providers
- Online or in-person formats
A certificate or proof of completion must be maintained and submitted during license renewal. For a list of providers, visit the IDPH Plumbing CEU Page.
Operating Without a License: Penalties and Risks
Working without a proper plumbing license in Illinois not only jeopardizes your business—it’s a serious legal offense.
Common Penalties
- Fines:
- Up to $10,000 per offense for unlicensed plumbing activity
- Legal Action:
- Cease and desist orders from IDPH
- Potential civil or criminal charges
- Risk to Career:
- Disqualification from becoming licensed in the future
- Insurance complications and denied claims
Why It Matters
Unlicensed plumbers risk endangering public health by performing work that may violate the Illinois Plumbing Code. Moreover, any work done without a proper license can’t be legally inspected or permitted—jeopardizing property sales, insurance claims, or municipal approval.
Why Plumbing Licensing in Illinois Benefits You and Your Customers
Licensing isn’t just a state requirement—it’s a mark of professionalism, skill, and accountability. Here’s why every plumber should be licensed and certified through the Illinois Department of Public Health:
For Contractors:
- Protects your business from legal liability
- Qualifies you for municipal contracts and commercial bids
- Enhances your reputation with homeowners and builders
- Allows you to supervise apprentices and grow your team
For Homeowners:
- Provides assurance of safety, code compliance, and quality
- Ensures recourse in the event of unsatisfactory work
- Guarantees oversight by IDPH and municipal inspectors
Full Licensing Requirements Checklist
Use this list to ensure you’re meeting the full compliance standards:
- ✔️ Age 16+ for apprentices; 18+ for journeyman
- ✔️ Completion of an IDPH-approved apprenticeship program
- ✔️ Proof of 4 years of work experience and instruction
- ✔️ Pass the Illinois Plumber Licensing Exam
- ✔️ Maintain liability insurance and bonding (contractors)
- ✔️ Complete 4 hours of continuing education annually
- ✔️ Renew license yearly before May 1
- ✔️ Operate under Illinois Plumbing Code and IDPH supervision
Stay Compliant and Connected as an Illinois Plumber
Maintaining your Illinois plumbing license is more than just filling out a form—it’s about staying connected with the industry, mentors, and standards that keep your work top-quality.
If you’re unsure about your licensing path or need help meeting your CEU requirements or navigating IDPH rules, contact your union, local contractor association, or consider finding a mentor within the Plumbing-Heating-Cooling Contractors Association (PHCC) of Illinois.
Together, we can raise industry standards and protect the integrity of Illinois’ plumbing profession.
👉 Have questions about renewing your Illinois plumbing license or pursuing plumbing contractor certification in IL? Call us today at (800) 123-4567 or DM us @IllinoisPlumbingPros on Facebook or Instagram.
Contact Information
Phone: (800) 123-4567
Instagram: @IllinoisPlumbingPros
Facebook: facebook.com/IllinoisPlumbingPros
SEO Keywords Used: Illinois plumbing license, plumbing contractor certification IL, IDPH plumber rules, how to get a plumber’s license in Illinois, continuing education for plumbers IL