wm-j-cocosWilliam J. Cocos is President of Wm. G. Cocos Co., Inc., a plumbing contracting company with offices in Lemay, Missouri. He has served in positions of various management responsibilities since joining the firm in 1976.

Prior to his employment in the family business, Mr. Cocos served for five years as an officer in the United States Navy (1971-76) and was a member of the U.S. Naval Reserve from 1976-1991. During his naval service, he was assigned to duty aboard ship, as personal aide to a flag officer and as congressional liaison officer at the U.S. Naval Academy.

In addition to his responsibilities at Wm. G. Cocos Co., Inc., he has been an active member of various civic, professional and church organizations and activities.

Bill and his wife Barbara reside in Oakville, Missouri and are the parents of William G., III and Marie George.

Current Civic Activities

Lemay Development Corporation a not for profit community betterment organization (Charter Director 1982-present; currently President)

Lemay Chamber of Commerce (Director)

St. Louis County Board of Plumber & Drainlayer Examiners (Chairman)

St. Louis Regional Crime Commission

Professional Affiliations

Plumbing Industry Council (President, 1996 – 2001)

Plumbing Contractors Association of St. Louis (President, 1990)

Other Affiliations

Director – Midwest BankCentre, Inc.

U.S. Naval Academy Alumni Association (President – St. Louis Chapter, 1981 – 1982)

American Legion (Lemay Post 162)


United States Naval Academy (B.S. – 1971)

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Hear What Our Customers Say

  • Our pipes froze and burst in our garage. Cocos Plumbing sent someone over right away. I was relieved to have them fixed before any water damage occurred. Thank you for the prompt, courteous service!

    Linda H. Columbia, IL
  • Opening up a new restaurant is stressful enough without worrying about the quality of your plumbing contractor. I am extremely pleased with the work Cocos did at Epic Pizza.

    Todd G. St. Louis, MO
  • We had a full kitchen remodel that we needed some expert help and advice on. I can’t think of what the guys at Cocos could have done better. They helped us pick out the exact faucet and sink to compliment the room perfectly, and installed a new garbage disposal that should give us many years of hassle free service. Can’t say enough good about them! 5- stars.

    Todd S. Sunset Hills, MO
  • When we remodeled our bathroom we called Cocos, recommended by a friend, and were very pleased with their service. Very knowledgeable and professional, and had a great selection of products to choose from. When you need a plumbing contractor in St. Louis, these are your guys. Our bathroom gets compliments all the time - Recommended.

    Sue T. Webster Groves, MO