| The United Association of Journeymen and Apprentices of the Plumbing and Pipefitting Industry of the United States and Canada |
www.ua.org |
| The California State Pipe Trades Council |
www.calpipes.org |
| Southern California Pipe Trades – District Council 16 |
www.dc16.org |
| Southern California Pipe Trades – Administrative Corporation |
www.scptac.org |
| Piping Industry, Progress and Education |
www.pipe.org |
| Building and Construction Trades Department |
www.bctd.org |
| State Building and Construction Trades Council of California |
www.cabuildingtrades.org |
| San Diego County Building and Construction Trades Council |
www.sdbuildingtrades.com |
| San Diego and Imperial Counties Labor Council |
www.unionyes.org |
| Mechanical Contractors Association of America |
www.mcaa.org |
| California Plumbing and Mechanical Contractors Association |
www.cpmca.org |
| Air Conditioning, Refrigeration and Mechanical Contractors Association of Southern California |
www.arcamca.org |
