Plumbers and Steamfitters Local 159 contractors
Plumbers and Steamfitters Local 159 Members Only


Dear Brothers and Sisters:

During this unprecedented time, please be assured that Plumbers and Steamfitters Local 159 is working diligently to ensure the livelihood of its membership.  We are staying on top of the news and the mandates that are being put into place so that we may keep you informed on the status of COVID-19 in our communities.

Please see below for a link to our COVID-19 website page.  There you will find links to other websites with up-to-date information and stats on the spread of this disease.  We will continue to post other information on our Home Page as it becomes available.

We are staffed 7:00am – 4:30pm, Mon-Thursday, and 7:00am-4:00pm on Friday.   We are making every effort to assist our membership by answering any questions.  Additionally, we are working hand-in-hand with our Trust Fund office to ensure our members are being taken care of. Thank you.


Please stay safe and healthy!

Tom Lawson
Business Manager
Plumbers & Steamfitters UA Local 159

Welcome To Plumbers and Steamfitters Local 159

United Association


  Plumbers Local 159 was chartered into the United Association on April 3rd, 1915 in Martinez, California. Almost 100 years later, our offices are still headquartered in Martinez where we have our union hiring hall, Journeyman and Apprentice Training facility and assembly hall.  With over 500 members and over 100 union contractors, we provide skilled plumbers, steamfitters, HVAC Refrigeration technicians and service plumbers for work in Contra Costa County and beyond.  

Our workforce takes pride in partnering with our signatory contractors in providing sophisticated piping systems to the end user.  From underground installations to final connections of fixtures and equipment, a plumber is required to have all the physical and mental skills needed to get the job done right the first time.

Our journeymen and apprentices are among the best trained in the world. Continuing education classes are offered on a regular basis to our journeymen to keep them updated on the changes and trends in   the plumbing industry.

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Contact Address

Union Office

1308 Roman Way Martinez, CA.

(925) 229-0400

(925) 229-1101

Monday-Thursday 7 am - 4:30 pm
Friday 7 am to 4 pm
Closed from 12 - 1 pm for lunch