Underground Utilities, Inc. is based in Spring Valley, San Diego County and operates throughout San Diego and Imperial Counties. UUI values the relationships we build with our clients and prides itself on providing competitive pricing, high quality work, safety, and teamwork.
UUI is founded on the strong principles, ethics, and integrity of its President, Michael Harness. Mike has been involved in the construction industry since 1976 and after 13 years in the underground / site utility field, he founded Underground Utilities, Inc. Mike’s experience, resourcefulness, focus on customer service, and professionalism have earned him the respect of a long list of clients and industry peers. Mike holds a Master’s Degree from San Diego State University in Industrial Education and a California Class “A” General Engineering license.