Licensed Plumbing Contractor in the St. Louis Metro Area

Call us to schedule a service call or receive an estimate.

From residential and commercial plumbing installations to industrial plumbing projects, our full-service construction team at Cocos Plumbing is ready to assist you. From residential and commercial plumbing installations to industrial plumbing projects, our full-service construction team is there when you need us.

When you need a St. Louis plumber, we want you to think of us first. Of course we can handle any residential plumbing needs you may have, but our expertise goes far beyond the basics. We strive for a level of professionalism and attention to detail that sets us apart from any competitor in our city, from Oakville to Chesterfield, Fenton to Columbia, Kirkwood and Webster Groves out to Wildwood, St. Charles to Belleville, Sunset Hills, Mehlville, South City to Maryland Heights – Ladue, Clayton, Crestwood and Maplewood…wherever you are in our metro area, we want to do whatever it takes to earn your business, as we’ve done for countless other incredibly valued customers over the last 9 decades.

We specialize in large-scale commercial plumbing installations, plumbing in schools and other institutions, and large industrial plumbing projects. We have the experience and knowledge to provide you with a full-service construction team no matter what your plumbing need. In other words, we create lasting partnerships with everyone we work with – just ask about our referral numbers!

Anywhere in the St. Louis area and eastern Illinois, Cocos Plumbing can handle any and all of your plumbing needs with the type of skill and professionalism you would expect from a fourth generation business like ours.

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Kitchen Plumbing

Home and commercial kitchen plumbing in St. Louis and surrounding area, for new buildings, institutions, remodeling projects and more. Read More >

Bathroom Plumbing

Tub, shower, and toilet plumbing repair & installation throughout St. Louis and the surrounding region, complete bathroom remodeling and more. Read More >

Sewer Plumbing

Sewer camera and cabling, backflow testing, sewer line repair and more in St. Louis, St Charles and Illinois. Read More >

At Cocos Plumbing, we will always provide a competitive bid on any job we provide an estimate for. And we certainly beat our competitors sometimes on cost. But overall, we put our focus on Value, not just Price.

We will never strive to offer rock bottom pricing, because everything else we deliver to our valued customers would then suffer. What does the focus on Value mean?

It means we are incredibly responsive to our customers, there whenever you need us. It means we do the job right, and the first time. It means prompt and highly efficient service to you at all times. cocos-plumbing-st-louis-county-city-residential-commercial-plumbers

When you’ve been in business for over 90 years (we were founded way back in 1925), you learn a thing or two about what customers really want. And we’ve found that being the most knowledgeable, professional, well-experienced and relationship-based licensed plumbers in St. Louis and the surrounding region, especially south St. Louis County – Lemay, Mehlville, Oakville – has served us pretty well, over all these years!

And this focus on Value is one of the primary reasons that so much of our business comes from referrals.




June 23, 2017

Mr. Joe Cocos

WM. G. Cocos Co. Inc.

738 Lemay Ferry Road

St. Louis, MO 63125

Re: Recent Work


Writing a $7,400 check for work performed on one’s house is not a pleasant experience. However, the expert work performed by and the professionalism of the Cocos workforce made writing the check very satisfying.

During my forty years in the construction industry I witnessed many workers who performed their work in a professional manner while working extremely hard. Chris, David and Joe are some of the best professionals in our industry.

The work; and tthe manner in which they installed it, performed in three days by these gentlemen is amazing. Cocos Plumbing is fortunate to employ such quality personnel. These three truly exemplify what the term “Build Union” really means.

Thank you for the great job and the “all new” sewer system. Please know that Cocos Plumbing will receive my highest recommendation to anyone needing plumbing services.



Stephen P. Schoemehl

Retired Business Manager, Local One, IBEW

Retired 5th District Representative

IBEW International Executive Council



I wanted to thank for the excellent job this week with installing our 11 new hot water heaters.

Everyone was so professional and the job was done perfectly and with little issue of people being without water. If anyone asks I will be more than happy to refer them to you for business.

Thank You,

Janel Uelk
Lydia’s House

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