D.S.I. is a plumbing contracting corporation, actively performing plumbing and heating work in California since 1986. Our jobs have spanned the globe from New York, New Jersey, Connecticut, Arizona, California and Washington, to the U.S. Virgin Islands and Guam with single project values ranging from $10,000 to $4,500,000.

Working For You:

Our trained staff will work with your design team and bring experienced technicians and craftspeople to the job to ensure a positive outcome for your project, no matter how complex.

Work Philosophy:

We are dedicated to doing the best possible job for the most competitive price;correctly and on time. We are adept at every piping installation. Whether it is a traditional plumbing installation in a residential high-rise, custom-tailoring an office complex for individual tennants, or developing a full life-support system for a hospital, DSI has the plumbing know how and the installation experience to successfully complete the job.


We are committed to a policy of affirmative action to ensure EQUAL EMPLOYMENT OPPORTUNITIES