Oakville Pump Service, Inc operates under California State Contractor's License # 744958. Our license information may be verified here.


  • Class A General Engineering Contractor
  • Class B General Building Contractor
  • Class C10 Electrical
  • Class C16 Fire Protection
  • Class C36 Plumbing
  • Class C60 Welding
  • Class D21 Machinery/Pumps
  • Class C57 Well Drilling 



  • Distribution Operators with D2 certification
  • Treatment Operators with T2 certifiation
  • WQA Certified Installer & Water Specialist 6
  • Recognized Alternative Sewage Treatment System (ASTS) approved service provider for Napa County


Professional organizations:

  • American Water Works Association (AWWA)
  • Water Quality Association (WQA)
  • California Groundwater Association (CGA)
  • Goulds Professional Dealer Association (GPDA)
  • National Groundwater Association (NGWA)
  • Napa Valley Grape Growers (NVG)


Oakville Pump Service has been in business for over 30 years and is family owned and operated. We value integrity, quality & technical competence. During the last 30 years countless irrigation, residential, commercial & public water systems have been installed, maintained and upgraded to modern operating standards.