Plumbing and Steamfitting the Hudson Valley

Welcome to Local 21

Thank you for taking the time to learn more about our us through our website.


Brothers and Sisters,

The apprenticeship programs of the United Association and all Building Trades Unions are under attack and your help is urgently needed.

The Department of Labor needs to hear from our membership as well as from our family and friends. Participating is easy to do and only takes a few minutes.

Please take the time to read the message below from UA General President Mark McManus that explains the issue in greater detail.

The links that follow this message will take you to the web-based tool the UA has created to expedite the submission of letters. The DOL will not accept form letters, so this tool will allow for the creation of multiple versions of letters based on drop-down menus and the selection of various topics of importance, as well as identifying whether the user is an apprentice, journey worker, retiree, or family member.

After clicking on the link, the process of generating a letter will take less than two minutes.

I urge every member to submit your letter to the DOL by the deadline of August 26. By doing so, you can do your part to help protect your future and the United Association.

Journey workers and Retirees go to:

Apprentices and Helpers go to:

Tradeswomen can also go to:

Friends and Family go to:

Welcome to UA Local Union No. 21

Since 1896, our members have been Plumbing and Steamfitting in the Hudson Valley.  The charter and history of Local 21 dates back to 1997, however we're made up of 7 local unions who over the last 100 years consolidated to form our local.

The Leadership and Members of United Association, Local 21, would like to welcome you to our website where you can find a great deal of information about us. The Plumbers, Steamfitters, and HVAC Service Technicians of Local 21 work on projects of all shapes and sizes. We are actively working at the IBM Plant in Fishkill, the Nuclear Power Plant at Indian Point, and on high rise luxury apartment building such as those in New Rochelle and White Plains.  We work on our areas educational institutions such as: elementary schools, high schools, colleges and universities, both in the public and private sector.  We can also be found working on industrial and commercial facilities of all sizes as well as residential developments and private homes.

Plumbers and Steamfitters Local 21 is vital to many industries throughout the Hudson Valley and it's because of our highly skilled workforce. We are over 1,500 members strong and growing. We pipe a 4 county area within our Jurisdiction and we are always looking for the best and brightest that our region has to offer. You can click on the Organizing and Apprenticeship pages to learn more about how to join our great organization.

We encourage you learn more About Us, our Services, and we hope that you enjoy your time on our site, and finally, we welcome all Feedback.

God Bless America!


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News Archive

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UA: Training For the Future

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Join our Apprenticeship Program

The Plumbers, Steamfitters and HVACR Service Technicians Local 21 Joint Apprenticeship Committee conducts periodic recruitment on an Annual basis or based on additional manpower needs.

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Benefits Office

We hope you will find valuable information on these pages and we encourage you to use the “Contact Us” to send us your feedback. If there is info. that you would like to see included in the future let us know!

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UA Local 21 is committed to putting the most highly trained workforce into the field to work for our contractors. View our huge database full of local and regional contractors. If you need assistance, please call us today!

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Training Center

Local 21 believes that training is the foundation on which any organization is based. We are not only involved with our program but our members also sit on various State Vocational committees.

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Members Only

Please log in to access the Members Only sections. If you do not have a UA Card Number please contact the UA Local 21 Union Office and they will provide you with your temporary password.

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Learn more about our Services

Plumbers and Steamfitters Local 21 is a Craft Union representing members employed in the construction industry.