WLHS is a plumbing subcontractor doing business in the following San Francisco Bay Area Counties; Santa Clara, San Mateo, San Francisco, Alameda, Contract Costa. If your business offers services related to the installation of plumbing systems and you would like to explore possible opportunities to do business with us, please read below.

We are seeking DVBE, LBE, MBE, WOSB, SBA, and prevailing wage compliant Second Tier Subcontractors.

Second Tier Subcontractors

  • Fire Caulking

  • Pipe Insulation
  • Excavation

  • Chlorination

  • Fuel Oil Piping

  • Welding

  • Backflow Certification

  • Concrete Scanning and Coring

a photo of a stack of building plans
Photo of copper pipes

We are seeking DVBE, LBE, MBE, WOSB, and SBA.


At WLHS, there is no limit to what one can achieve. We offer opportunities in a variety of disciplines.


  • Accounting

  • Purchasing and Warehouse

  • Estimating

  • Design / Detailing

  • UA Affiliated Plumbers

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EEO & AFFIRMATIVE ACTION: WLHS is an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, pregnancy or maternity, national origin, citizenship, genetic information, disability, protected veteran, gender identity, age, or any other status protected by law. This applies to recruiting, hiring, transfers, promotions, terminations, compensation, benefits, and all other terms and conditions of employment, and also states that retaliation against any employee who files a complaint regarding possible violations of this policy will not be tolerated.

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We are seeking DVBE, LBE, MBE, WOSB, and SBA.

Professional Service Providers

We work with a variety of professional service providers in our operations and strive to maintain mutually beneficial, long-lasting relationships. If you are interested in becoming an approved vendor, reach out to our team.