UA Local Union No. 343 - History

Plumbers and Steamfitters Local Union No. 343 is part of the United Association of Plumbers, Fitters, Welders and HVAC Service Techs.  For over 100 years we have proudly served the counties of Solano and Napa in California.  

Click Here to read a full account of Plumbers and Steamfitters Local Union No. 343's History.