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Welcome and thank you for visiting the website of United Association Local Union 345 Landscape/Irrigation, Sewer & Storm Drain Underground Industrial Piping Industry. Local 345 is a combination local of Landscape/ Irrigation, Sewer & Storm Drain and Specialty Piping under the Plumbing trade with more than 1000 members, including Journeymen, Apprentices, Tradesman & Retirees. We provide the highest quality work in the industry, covering 12 counties in Southern California including: Los Angeles, Orange, Riverside, San Bernardino, Imperial, San Diego, Santa Barbara, Ventura, Inyo, Kern, Mono and San Luis Obispo counties.