Master Plumbers

No person shall engage in the plumbing business within the City of Watertown unless they have obtained a Certificate of Competency from the Watertown Examining Board of Plumbers.  Any person desiring to engage in the business of plumbing in the City of Watertown shall first apply to the Watertown Examining Board of Plumbers and pay the associated fees for the Master Plumber examinations.  Please contact the Code Enforcement Office at (315) 785-7735 for more information about applying to become a Master Plumber.

Annual Master Plumber License

Each Master Plumber who has passed all exams given by the Examining Board of Plumbers and has received a Certificate of Competency must apply for an annual Master Plumber license.  This license expires each calendar year on June 30.


Annual license fee is $250

Application Process

Complete the Master Plumber Annual License application   

Make check payable to the “Watertown City Clerk” for the appropriate amount

Mail application form and payment to the City Clerk’s Office, 245 Washington Street, Watertown, NY 13601 or place in an envelope addressed to the “City Clerk” in the City Hall Drop Box located at the Sterling Street entrance to the building

The Certificate of Registration will be mailed once it is processed

General Information
Phone Numbers
(315) 785-7780
Fax: (315) 785-7796
Emergencies: Dial 911
245 Washington St.