Welcome To Call The Underground!

Call The Underground-Oasis Irrigation is the largest irrigation contractor in DuPage County serving residential and commercial businesses in Northern Illinois and the Chicagoland area including: Kane County, Kendall County, Cook County, Lake County, McHenry County, Will County, DeKalb County, Grundy County, LaSalle County and Kankakee County. Click here for a more complete listing of the cities we serve.

We are a full service irrigation contractor and plumbing contractor with over 32 years of experience. We install, maintain, and repair underground sprinkler systems, and perform backflow testing and install new RPZ devices.

We offer professional, affordable new sprinkler system installations, reliable sprinkler repair, sustained sprinkler maintenance programs, and backflow testing by a CCCDI Inspector.

Call Us TODAY for a FREE QUOTE: 630-963-5859

Professional Credentials

Call the Underground-Oasis Irrigation maintains its professional standing by attending Continuing Education classes, and keeping current with industry standards. We are Licensed, Bonded and Insured in the State of Illinois. Our professional credentials include the following:

  • Licensed Irrigation Contractor
  • Licensed Plumbing Contractor
  • Licensed Plumbers on site
  • CCCDI Inspectors certified by the Illinois EPA for RPZ Certification and Backflow Testing
  • Licensed Irrigation Employees (Technicians) by the Illinois Department of Public Health
  • Rainbird Select Contractor
  • Hunter Preferred Contractor