Understanding Illinois Plumbing Licensing: A Comprehensive Guide
Understanding the licensing structure and legal requirements for plumbers in Illinois is crucial for anyone serious about building a trustworthy and professional plumbing career. Whether you’re just starting as an apprentice or you’re an experienced plumbing contractor looking to grow your business, staying in full compliance with the Illinois Department of Public Health (IDPH) rules isn’t just recommended—it’s required.
This guide offers everything you need to know about getting and renewing your Illinois plumbing license, preparing for exams, fulfilling continuing education, and avoiding costly penalties. If you’re asking, “How do I get a plumber’s license in Illinois?” or “What are the certification requirements for plumbing contractors in IL?”—you’re in the right place.
Let’s break down what Illinois plumbing contractors and professionals need to know about licensing and certification.
Types of Plumbing Licenses in Illinois
The State of Illinois offers several types of plumbing licenses under the governance of the Illinois Department of Public Health (IDPH). Each level has different prerequisites, responsibilities, and limitations.
1. Apprentice Plumber License
- An Apprentice Plumber License is the entry-level license you need to legally begin your training to become a licensed plumber in Illinois.
- Must be sponsored by a licensed plumbing contractor
- Requires classroom time in an approved apprenticeship program
- Valid for a total of 6 years
- Renewal is annual, contingent on proof of program participation
2. Licensed Plumber (Journeyman)
- Upon completing your apprenticeship, you must pass a comprehensive state exam to earn your license as a Licensed Plumber.
- Must have completed at least four years of an approved apprenticeship
- Must pass the Illinois Plumber’s Licensing Exam
- Can work independently or for a contractor
- License must be renewed annually
3. Plumbing Contractor License
- A Plumbing Contractor License allows you to own and operate a plumbing business. This is the top tier for professionals in the field.
- Must have a valid Licensed Plumber (Journeyman) license
- Business must have liability insurance and a minimum $100,000 surety bond
- Must apply through the IDPH and provide business structure documentation
- Must use a state-approved contractor license number on any marketing materials or service vehicles
For full details, check the official IDPH page on Plumbing Licensing.
Application Process and Annual Renewal
To maintain good standing and continue working legally, plumbers must follow the licensing process outlined by the Illinois Department of Public Health.
Initial Application for Apprentice or Plumber License
- Complete the proper IDPH application form
- Provide proof of employment or enrollment in an approved apprentice program for Apprentice license
- Submit required identification and work history
- Pay applicable fees (as of 2024: $100 for Apprentice, $175 for Licensed Plumber, $150 for Contractor)
- Submit the Plumber’s Testing Application if taking the licensing exam
Annual License Renewal
- All plumber and apprentice licenses expire on April 30 each year
- Licensees must submit a renewal application before the expiration date
- Pay the annual renewal fee
- Journeyman and contractor licensees must verify that they’ve completed required continuing education hours
Renewal forms and instructions can be found directly on the IDPH Plumbing License Renewal page.
Required Exams and Training
Becoming a Licensed Plumber in Illinois involves both academic and hands-on training. Here’s what’s expected at each stage:
Apprentice Training
- Must enroll in a recognized union or non-union apprenticeship program
- Program combines on-the-job training with classroom instruction
- Covers pipefitting, tool usage, code compliance, safety practices, and plumbing system design
Journeyman License Exam
- Exam is administered by IDPH or an approved third-party testing service
- Typically includes both written and practical (hands-on) portions
- Topics tested: plumbing codes, blueprint reading, water supply, drainage, and vent systems
- Passing score is required to obtain journeyman level licensing
For the latest on exam content and scheduling, see the IDPH’s Plumbing Exam Information page.
Continuing Education Requirements
To stay compliant, professionals with a Licensed Plumber or Contractor license must complete annual Continuing Education (CE) hours. This ensures all licensed plumbers remain current with evolving technologies, changing codes, and safety best practices.
CE Requirements:
- Licensed Plumbers must complete 4 hours of IDPH-approved continuing education each year
- CE must be completed through state-approved providers
- Must submit proof of completion during license renewal process
- Failure to complete CE hours results in denial of license renewal
Check IDPH’s list of approved CE providers periodically as the education landscape updates with newer offerings and classes.
Penalties for Operating Without a License in Illinois
Working as a plumber without the appropriate state license in Illinois comes with significant penalties—and it’s not worth the risk.
IDPH-Enforced Violations May Include:
- Cease-and-desist orders
- Fines ranging from $1,000 to $5,000 per violation
- Potential civil or criminal charges depending on the severity of the offense
- Loss of eligibility for future licensing
Contractors or companies found employing unlicensed plumbers can also face penalties, including license suspension or revocation. Public records of violations can harm your professional reputation for years.
Reporting Violations
The state encourages all professionals and the public to report suspected unlicensed plumbing work. Please refer to IDPH’s complaint submission process at Plumbing Violation Complaint Form.
Why Plumbing Licenses Matter – For Contractors and Homeowners
Plumbing licensure isn’t just a hoop to jump through—it’s essential to the safety and integrity of homes, businesses, and public buildings.
Benefits for Contractors:
- Legal authority to perform plumbing work and advertise services
- Increased trust from clients and general contractors
- Ability to bid on public and commercial projects
- Eligibility for professional insurance coverage
- Legal protection from unfair liability claims
Benefits for Customers and Homeowners:
- Assurance that plumbers meet minimum training and safety standards
- Protection against unqualified or fraudulent contractors
- Recourse through IDPH if workmanship is substandard
- Accountability through state enforcement and licensing lookups
Homeowners can search for licensed professionals using the IDPH’s Plumber License Lookup Tool.
Summary: How to Get a Plumber’s License in Illinois
Whether you’re starting out or taking your business to the next level, here’s a recap of what you need:
To Get Your Illinois Plumbing License:
- Enroll in an approved apprenticeship program
- Obtain your Apprentice License from IDPH
- Complete at least 4 years of training and education
- Pass the Illinois Plumber Licensure Exam
- Apply for a Licensed Plumber credential
- For contractors: submit additional business documents and insurance proof to become a licensed contractor
Call to Action: Stay Compliant and Connect with Support
Don’t jeopardize your hard-earned reputation by overlooking state requirements. Licensing in Illinois protects your business, your customers, and your ability to grow and compete in a crowded marketplace.
✅ Ensure your license is active
✅ Complete your continuing education
✅ Display your contractor number on all advertising and vehicles
✅ Contact a mentor or Illinois-based trade association to stay on top of evolving regulations
If you’re unsure where to start or which steps apply to your current situation, consider reaching out to a professional mentor, union chapter, or licensing expert. Knowledge is your best tool—keep it sharp.
For guidance, visit the official IDPH Plumbing Licensing Page or connect with the Illinois Plumbing-Heating-Cooling Contractors Association (IL PHCC) at www.ilphcc.com.
Stay licensed. Stay trusted. Grow your reputation the right way.
Need help navigating the plumbing license process in Illinois? Call us at (555) 123-4567 or follow us on social media for updates, training opportunities, and helpful tips:
📱 Facebook: @ILPlumbingProfessionals
📸 Instagram: @ILPlumbersOnTheJob
🐦 Twitter: @Plumbing_IL
Let’s get you certified and working legally in Illinois—safely and professionally.