If you’re a plumbing contractor, journeyman, or apprentice working in Illinois—or planning to enter the plumbing trade in the state
One of the most important steps in your career path is understanding and securing the proper licensing and certification. Whether you’re just starting out or a seasoned professional, staying compliant with the Illinois Department of Public Health (IDPH) regulations is essential not only for legal operation but also for protecting your customers, your business, and your professional reputation.
In this comprehensive guide, we’ll walk you through the licensing process, discuss training and renewal requirements, outline the consequences of working without a license, and explain why plumbing licenses matter in Illinois. If you’re asking, “How do I get a plumber’s license in Illinois?” or “What are the IDPH plumber rules?”—you’re in the right place.
Understanding the Types of Plumbing Licenses in Illinois
Before diving into the specifics of how to get a plumber’s license in Illinois, it’s crucial to understand the different types of licenses issued by the Illinois Department of Public Health (IDPH). These licenses define the scope of work you are legally permitted to perform.
1. Apprentice Plumber License
The entry point for anyone starting a career in plumbing is the Apprentice Plumber License. As an apprentice, you’ll work under the supervision of a licensed plumber, learning the trade through hands-on experience and formal instruction.
Key facts:
- Required before starting on-the-job training.
- Limits you from performing plumbing work unsupervised.
- Must work under a licensed plumber or plumbing contractor.
- License is valid for up to 6 years.
2. Licensed Plumber / Journeyman Plumber
After gaining sufficient experience and training, an apprentice can apply to take the licensing exam to become a Licensed Plumber. In other states, this level may also be referred to as a Journeyman Plumber.
Key facts:
- Allows plumbers to work independently or as employees of a plumbing contractor.
- Requires passing a comprehensive exam administered by IDPH.
- Provides full legal authority to perform plumbing work in Illinois.
3. Plumbing Contractor License
This license is required for individuals or businesses that operate as plumbing companies and contract for plumbing work in Illinois. You must already be a Licensed Plumber to apply.
Key facts:
- Allows the licensee to hire plumbers and apprentices.
- Required for pulling permits and contracting plumbing jobs.
- Must carry liability insurance and a bond per state standards.
Step-by-Step Guide: How to Get a Plumber’s License in Illinois
To move forward in your plumbing career, following Illinois’ licensure process is non-negotiable. Here’s a clear breakdown of what’s required at each stage.
🧰 Apprentice Plumber License Requirements:
- Complete and submit an apprentice plumber license application to IDPH.
- Provide information about the licensed contractor or plumber under whom you will work.
- Pay the applicable fees.
IDPH Apprentice Plumber License Application
🧪 Licensed Plumber (Journeyman) Requirements:
- Accumulate a minimum of 4 years of apprenticeship under a licensed plumber.
- Complete the required apprenticeship training—both theoretical classroom instruction and field experience.
- Submit an exam application and supporting documents to IDPH.
- Pass the Illinois plumbing license examination, which includes:
- Code Compliance
- Hands-on practical skills
- Blueprint reading
- Pay all relevant exam and licensing fees.
IDPH Plumbing License Examination
🛠 Plumbing Contractor License Requirements:
- Must already be a licensed plumber in IL.
- Register your business with the Secretary of State if operating as an entity.
- Obtain a $20,000 surety bond for plumbing installation.
- Provide proof of general liability insurance (minimum $300,000 per occurrence).
- Submit the plumbing contractor license application to IDPH.
- Pay your licensing fee.
Maintaining and Renewing a Plumbing License in Illinois
Keeping a valid plumbing license in Illinois means being proactive about expiration dates and meeting your continuing education requirements.
Key Renewal Components:
- Most plumber licenses in Illinois (except apprentice licenses) must be renewed annually by May 1.
- Continuing education is mandatory for licensed plumbers.
- You’ll receive renewal notifications from IDPH, but it is your responsibility to maintain compliance.
- Late renewals may require additional fees or re-examination, depending on how long the license has lapsed.
Continuing Education Requirements for Plumbers in Illinois
To ensure plumbers stay updated with modern practices, tools, and safety standards, Illinois mandates continuing education (CE) for license renewal.
What You Need to Know:
- Licensed plumbers are required to complete 4 hours of continuing education annually.
- CE courses must be approved by the IDPH.
- Topics usually include Illinois Plumbing Code updates, safety procedures, water conservation, and emerging technologies.
- Proof of completion must be submitted before your annual license renewal.
Approved CE providers can be found on the IDPH’s website, offering online and in-person options.
Penalties for Working Without a Plumbing License in Illinois
Operating as a plumber or contracting plumbing work without a proper license in Illinois is not only unethical but illegal—and the consequences can be severe.
Penalties may include:
- Fines up to $5,000 per violation
- Cease and desist orders from the IDPH
- Legal prosecution for fraudulent or unpermitted work
- Loss of business license or ability to obtain state work
- Damage to your professional reputation
Homeowners and general contractors should always verify a plumber’s license before hiring. IDPH provides tools to check licenses online.
IDPH Plumber License Verification
Why Licensing Matters for Both Plumbers and Homeowners
Plumbing involves systems that directly impact the health and safety of the public, including drinking water, sewage, and gas lines. That’s why Illinois considers licensing not just a regulatory requirement—but a public service mandate.
For Plumbers and Contractors:
- Increases job opportunities and earnings.
- Ensures you’re eligible for insurance, permits, and legal contracts.
- Protects you from liability in case of system failure or injury.
- Shows professionalism and builds customer trust.
For Homeowners:
- Reduces the risk of faulty or unpermitted work.
- Ensures compliance with state plumbing codes.
- Provides legal recourse if mistakes happen.
- Gives peace of mind knowing the plumber meets industry standards.
Your Responsibility as an Illinois Plumbing Contractor
Staying licensed and certified is not a one-time event—it’s part of your commitment to safety, professionalism, and customer satisfaction. Neglecting this responsibility can damage your reputation and open you to legal and financial risks.
Quick Checklist for Illinois Plumbing License Compliance:
- Apply for the correct license level (Apprentice, Plumber, or Contractor).
- Complete the necessary training hours and fieldwork.
- Register and pass the IDPH plumbing examination.
- Maintain required insurance and bonding (for contractors).
- Complete 4 hours of continuing education annually.
- Renew your license each year by the May 1 deadline.
Call to Action: Stay Compliant, Grow with Confidence
If you’re unsure where to start, or if you need guidance on navigating Illinois plumbing license requirements, reach out to professionals who can help:
- Talk to your apprenticeship sponsor or employer.
- Connect with trade associations like Illinois Plumbing & Heating Contractors Association (IPHCA) or UA Local plumbing unions.
- Monitor the IDPH website for regulation, licensing, and CE updates.
Need help? Give us a call at (555) 123-4567
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