Plumbers' Examining Board

Welcome to the website of the Office of Professional and Occupational Regulation, an agency within the Department of Professional and Financial Regulation. We appreciate your visit to our homepage and we look forward to assisting you.

Beginning on January 1, 2024, the Plumbers’ Examining Board will require licensees to use the online application system to apply for all licenses, exams and renewals. Using the online system allows staff to process applications more quickly and efficiently. This will decrease wait times and will allow applicants to track the status of their applications.

As a result of this change, after January 1, 2024, applications received by fax, mail or email will not be processed and will not be returned to the applicant.

The link to our online application portal can be found below

If you need password assistance, please contact staff at   
If you encounter difficulty in using the online application system, please reach out to inforME customer support at:


The Plumbers' Examining Board was established to preserve and protect the health of the people of the State of Maine by insuring the existence of adequate safety and health standards for plumbing installations, to examine and license persons performing plumbing in the State of Maine.

The primary responsibilities of the Board are to establish and determine qualifications and oversee the administration of examinations of any person applying to act as a plumber, to investigate all complaints of noncompliance of violations of the current board law or rules, to recommend suspension or revocation to the Administrative Court under the APA of all licensees found to be guilty of fraud, deceit, negligence or misconduct.

You may follow this link to the Secretary of State's office to view a list of board members. Members of the public should not contact board members with questions or comments.  All questions, comments or any other board-related matters must be directed to the Board’s manager. 


Staff Announcements:


Notice Regarding License Verification Requests

License verifications is available at no charge by visiting Plumbers' Examining Board online licensing portal. OPOR does not issue paper verifications. 

UPC Training Videos Available

In November and December 2022, there was online Zoom UPC training sessions available to all licensed plumber and plumbing inspectors.  Those four Zoom sessions were recorded and now available if you missed the opportunity to attend.  Please click the link below to access the trainings.

2022 UPC Training Sessions

Information and Resources

Examination Information Bulletin

The Maine Plumbers’ Examining Board has contracted with PROV, Inc. to provide its examinations for approved candidates. The Candidate Information Bulletin (PDF) helps explain the rules and processes candidates will need to undertake to complete the testing requirements for their professional licenses.

Update on Physical Testing Locations.

2021 UPC – Effective January 1, 2022

The Plumbers’ Examining Board has adopted a rule repealing the current 02-395, Chapter 4, Installation Standards, replacing it with a rule with the same title and in the same location that adopts and establishes installation rules and incorporates by reference into board rule the International Association of Plumbing and Mechanical Officials 2021 Uniform Plumbing Code, Copyright © 2020, 29th edition, Third Printing, May 2021, as the standard for plumbing installations in the State of Maine, subject to the exclusions and amendments as set forth in the rule. Please visit this link for a copy of the rule. The newly adopted Chapter 4 will be effective January 1, 2022.

To purchase a 2021 UPC book please contact IAPMO:

To view the 2021 Uniform Plumbing Code ebook please use the following link:

2023 PHCC Uniform Plumbing Code Presentation

2023 PHCC Uniform Plumbing Code Presentation (pdf)

Common Plumbing Code Issues - Coming Soon.

License Delivery

Future correspondence from the Plumbers' Examining Board will be sent to you by email, so please be sure to keep your contact information current. Follow this link to verify your contact information.

License Descriptions

How to apply for a license

Requirement to Report Convictions and Changes of Contact Information Within 10 Days of the Occurrence

10 Day Notification