If you’re a plumber or plumbing contractor working in Illinois

Understanding and complying with the state’s licensing laws is not just a legal requirement—it’s essential to growing and maintaining a reputable business. Whether you’re an apprentice just starting out, a journeyman preparing for certification, or a contractor running your own company, it’s crucial to stay informed.

This guide covers everything you need to know about Illinois plumbing licenses, plumbing contractor certification in IL, and continuing education for plumbers in IL, including how to apply, renew, and avoid costly penalties.

Understanding Illinois Plumbing Licenses

In the State of Illinois, all plumbers must be licensed through the Illinois Department of Public Health (IDPH). Plumbing work performed without proper credentials not only risks penalties but also jeopardizes public health and safety.

Types of Plumbing Licenses in Illinois

Illinois offers three main types of plumbing credentials:

1. Apprentice Plumber License

• Eligibility: Anyone over 16 years of age who is attending or has been accepted into a plumbing apprenticeship program approved by the IDPH.
• Scope of Work: Apprentice plumbers must work under the direct supervision of a licensed plumber.
• Expiration: Apprentice licenses must be renewed annually and are valid for a maximum of six years.

2. Licensed Plumber (Journeyman)

• Eligibility: Must have successfully completed an approved apprenticeship program.
• Scope of Work: Can perform plumbing jobs independently without direct supervision.
• Title Usage: Officially referred to as a “Licensed Plumber” in Illinois.

3. Plumbing Contractor License

• Eligibility: Must hold a valid Illinois plumber license and submit proof of business registration and insurance.
• Requirements: Must pass additional requirements through the IDPH, including bond submission, business details, and possibly local permitting.

For full details, refer to the IDPH Plumbing Licensing Page.

Application and Renewal Process

Each license level in Illinois has its own application and renewal requirements. Below is a breakdown of key steps and documents needed.

Applying for a Plumbing License in Illinois

Apprentice License Application:

• Submit proof of age and education (high school diploma or GED)
• Enroll in and attach verification of apprenticeship program
• Submit non-refundable application fee
• Application link: IDPH Apprenticeship Information

Licensed Plumber Application:

• Complete Application for Examination
• Document at least four years of apprenticeship training
• Submit 8,000 hours of verified plumbing experience
• Pass Illinois Plumber’s Exam
• Pay exam and application fees

Plumbing Contractor License Application:

• Hold a current plumber’s license
• Register your business with the Illinois Secretary of State
• Provide proof of liability insurance and a surety bond (minimum $20,000)
• Complete contractor application form through the IDPH

License Renewal Information:

• Apprentice: Renewed annually for up to six years
• Licensed Plumber: Every 1-2 years depending on IDPH cycles
• Contractor: Annually, with proof of insurance and other certifications

Timely renewals are critical. Failure to renew can result in license suspension or loss of credentials. Check your renewal date via the IDPH portal or contact IDPH for up-to-date deadlines.

Exams and Training Requirements

Taking the Illinois Plumber’s Exam is a key step to becoming a licensed journeyman or contractor. Here’s what’s involved:

Illinois Plumber’s Licensing Exam

• Location: Administered by the IDPH at designated centers
• Format: Multiple-choice written exam, practical test
• Topics Covered:
  • Illinois Plumbing Code
  • Waste and vent systems
  • Potable water distribution
  • Blueprint reading
  • Job safety and regulations
• Passing Score: Varies but typically 70% or higher

It is strongly recommended to take a test prep course and review the current Illinois Plumbing Code before sitting for the exam. Local unions and trade schools offer preparatory classes and exam simulations.

Continuing Education Requirements for Plumbers in Illinois

To maintain an active plumbing license in Illinois, licensed plumbers are required to complete continuing education (CE) courses.

Key Details:

• Hours Required: 4 hours annually
• Approved Providers: Must be IDPH-approved courses
• Topics May Include:
  • Updates to Illinois Plumbing Code
  • New technology and materials
  • Workplace safety and health
  • Water conservation and green plumbing
• Reporting: Plumbers are responsible for submitting their CE hours during license renewal

For a list of IDPH-approved CE providers, visit IDPH Continuing Education Info.

Staying current with CE not only ensures compliance but also improves your competitiveness and expertise as a plumbing professional.

Penalties for Operating Without a License

Unlicensed plumbing work is taken very seriously in Illinois, with strict penalties to discourage unsafe or substandard work.

Penalties May Include:

• Fines: Up to $10,000 per violation
• Cease and Desist Orders: May halt your business operations immediately
• Criminal Charges: Class A misdemeanors or higher for repeat offenses
• Loss of Future License Eligibility: Repeat violators may be barred from obtaining a license

According to the IDPH, even advertising or bidding plumbing services without proper licensing can result in penalties. This applies whether you’re a solo plumber or operating a small business.

Why Licensing Protects You and Your Customers

Licensing isn’t just a bureaucratic hurdle—it protects plumbers, contractors, and homeowners.

Benefits for Contractors:

• Increases Credibility: Homeowners and general contractors choose licensed professionals for quality assurance.
• Legal Protection: Operate within the law and reduce liability issues.
• Access to Better Jobs: Many municipalities and large-scale contracts require a license.
• Professional Recognition: Shows commitment to trade standards and safety.

Benefits for Homeowners:

• Code Compliance: Licensed plumbers are trained in current local and state codes, reducing project failures or corrections.
• Insurance Protection: Most home insurances only cover damage caused by licensed professionals.
• Safety First: Licensed work ensures proper handling of water systems, sewage, and appliances to protect health.

In short, licensing is a win-win for everyone, setting the bar for professionalism and public safety in the trade.

Summary: Requirements at a Glance

Here’s a quick-reference checklist for getting and maintaining your plumbing license in Illinois:

Plumbing License Requirements in Illinois:

• ✅ Must be at least 16 to begin apprenticeship
• ✅ Complete registered apprenticeship (4 years / 8,000 hours)
• ✅ Pass the state plumber’s licensing exam
• ✅ Maintain liability insurance and surety bond for contractor status
• ✅ Renew license on time (annually or biennially)
• ✅ Complete 4 hours of continuing education annually
• ✅ Follow all rules under the Illinois Plumbing License Law (IDPH rules and regs)

Final Call to Action

Are you a plumbing contractor in Illinois unsure about your licensing status? Are you an apprentice looking for the right mentorship? Don’t wait until a code violation or fine puts your business at risk.

➡️ Contact your local plumbing union, trade association, or reach out directly to the Illinois Department of Public Health to get assistance.

➡️ If you’re just starting out, look into approved apprenticeship programs and test prep courses.

➡️ Already licensed? Make sure your continuing education hours are up to date and renewal deadlines are on your calendar.

Getting and staying licensed is not just the law—it’s a mark of your dedication to the trade, your clients, and the future of your plumbing business in Illinois.

Stay licensed. Stay trusted. Grow your reputation the right way.

Need help navigating your licensing journey? Call us today at (312) 555-1234 or follow us @ILPlumbersPro on Facebook and Instagram. We’re here to help you build your skills and grow your business the right way.