Guide to Plumbing Licensing in Illinois

For plumbing professionals seeking to build a lasting and reputable career in Illinois, understanding and complying with state licensing and certification requirements is essential. Whether you’re beginning your journey as an apprentice or managing your own plumbing contractor business, staying informed on these regulations is not only legally necessary but also a strong foundation for professional growth and trust in your community.

In this comprehensive guide, we’ll break down everything licensed plumbers in Illinois need to know—covering processes for apprentice, journeyman, and contractor licenses, exam and education requirements, penalties for non-compliance, and links to official resources like the Illinois Department of Public Health (IDPH).

Types of Plumbing Licenses in Illinois

In Illinois, all licensed plumbers fall under the regulatory authority of the Illinois Department of Public Health (IDPH). IDPH oversees testing, licensing, and renewal for three main types of plumbers:

1. Apprentice Plumber

This is where most plumbing professionals begin. An apprentice plumber works under the direct supervision of a licensed plumber while gaining hands-on experience and completing educational requirements.

2. Licensed Plumber (Journeyman Equivalent)

Once an apprentice has met the requirements, they may apply to take the plumber licensing examination and become a licensed plumber. Illinois does not use the traditional “journeyman” terminology but the licensed plumber role is considered equivalent.

3. Plumbing Contractor

To operate a plumbing business or hire other plumbers, individuals must register as plumbing contractors with the IDPH. This level includes liability insurance, business registrations, and additional compliance measures.

How to Get a Plumber’s License in Illinois: Step-by-Step

Whether you’re just beginning your career or looking to upgrade your status to a contractor, here’s how to secure your Illinois plumbing license efficiently and legally.

Apprentice Plumber Requirements

• Be at least 16 years old.
• Be enrolled in or intending to enroll in a plumbing training program.
• Work under a licensed plumber.
• Submit an application through the IDPH.
• Renew the apprentice license every year.

You must complete at least four years of apprentice training before you can take the licensing exam to become a licensed plumber.

Licensed Plumber Requirements

• Completion of at least four years as a registered plumbing apprentice.
• Documentation of on-the-job training and supervised hours.
• Passing the state licensing exam.
• Fee payment for application and licensure.

The exam covers general plumbing code, system design, materials, safety, and practical application.

Plumbing Contractor Certification in IL

Additional steps are required beyond holding a plumber’s license:

• Hold a valid Illinois plumber license.
• Submit the Plumbing Contractor Application.
• Provide proof of liability insurance (minimums vary).
• Submit a $20,000 Surety Bond.
• Register your business name with the Illinois Secretary of State and obtain a Federal Employer Identification Number (FEIN).
• Pay the appropriate fee to the IDPH.

Find the official plumbing contractor registration form on the IDPH Plumbers Licensing webpage.

Renewal and Continuing Education for Plumbers in IL

Annual Renewal Process

Plumbing licenses in Illinois must be renewed annually by May 1. To remain in good standing, licensees must:

• Submit a renewal form and applicable fee.
• Complete all continuing education requirements.
• Maintain records of insurance (for contractors).

IDPH sends notification emails or mailers prior to license expiration.

Continuing Education Requirements

The State of Illinois mandates continuing education (CE) for licensed plumbers:

• A minimum of 4 hours of IDPH-approved continuing education each year.
• Continuing education courses can be taken in person or via approved online providers.

Courses cover plumbing code updates, system design and repair best practices, safety and regulations, and sustainable technologies.

Retain proof of completion for every course. Find CE providers on the IDPH’s official Plumbing Education Records system.

Penalties for Operating Without a License in Illinois

Operating without a license can result in cease and desist orders, misdemeanor charges, civil fines, public listing of non-compliance, and potential loss of future licensing eligibility.

The IDPH regularly audits and inspects plumbing work, penalizing unlicensed activity.

Consult the IDPH License Look-Up Tool or call the Plumbing Program Office at 217-524-0791 for license status inquiries.

Why Licensing Protects Plumbers and Homeowners

Obtaining and maintaining an Illinois plumbing license benefits both professionals and clients:

For Contractors & Plumbers:

• Legally bid on and carry out plumbing work.
• Qualify for business insurance and bonding.
• Promote credibility and professionalism.
• Access municipal permits and inspections.
• Avoid legal penalties.

For Homeowners:

• Confidence in health and safety compliance.
• Protection under consumer rights laws.
• Recourse for poor workmanship or fraud.
• Assurance of trained, insured contractors.

Stay compliant, protect your reputation, and grow your business the right way.

Summary: Checklist for Illinois Plumbing License Candidates

Key steps for obtaining and maintaining a plumbing license in Illinois:

• ✅ Be at least 16 years old to start apprenticeship.
• ✅ Register with IDPH as an apprentice plumber.
• ✅ Complete at least four years of documented training.
• ✅ Pass the Illinois plumber licensing exam.
• ✅ Annually renew your license before May 1.
• ✅ Complete 4 hours of continuing education yearly.
• ✅ For contractors: register with IDPH, submit proof of insurance and bonding.
• ✅ Never operate without a valid license.

Stay Compliant, Stay Confident

A valid Illinois plumbing license positions you as a professional who values craftsmanship and compliance. Ensure you’re on the right path by seeking guidance from industry associations or licensing mentors.

Contact us at (312) 555-1234 or follow us @ILPlumberPros on Facebook and Instagram for compliance coaching or document preparation assistance.

Closing Thoughts

Earning and maintaining your Illinois plumbing license demonstrates your commitment to quality, safety, and professionalism. Stay licensed, stay trusted, and grow your reputation the right way.

We’re here to help plumbers across Illinois succeed from apprenticeship to business ownership.

Contact us at (312) 555-1234 | Follow us @ILPlumberPros on Facebook and Instagram.