Your Local Plumbing Expert

" Your local plumbing service in

San Jose & the South Bay"

We are the best locally owned and operated plumbing & sewer company in Sunnyvale and the entire Silicon Valley.

No matter what your plumbing needs are, you can count on Comet Plumbing & Sewer Co.  to provide you with quality professional plumbing services. No job is too big or too small - from the leaky toilet, to the sewer pipe bursting in the front yard - we fix it all!

Because your time is valuable, a fully trained plumber will arrive at your home in a plumbing service vehicle stocked with thousands of parts. Our plumbing service vans hold the most common, top quality manufactured parts which allows your plumbing issue to be fixed immediately since there is no need to order parts.
We can service up to 90% of all plumbing items, excluding specialty items, while we are there, saving you both time and money.

Your plumbing service call will begin with a thorough examination of the problem and then our plumber will spend time helping you understand the problem and the proper procedure to repair it correctly and meet your expectations. We will provide you with honest and straightforward pricing for all of your options. These options are designed to help save you money before any work begins, so you know exactly what it costs and what type of work is going to be performed.

Our Plumbing Repair Services Cover:

  •  Leaky Faucets

  •  Garbage Disposals

  • Clogged Toilets

  • Clogged Drains

  •  Install Washing Machines

  • Re-routing Piping

  • New Construction

  • Sewer Repair

  •  Bathroom Plumbing

  • Kitchen Plumbing

  • Sink Repair

With our endless list of suppliers and our constant attention to reducing costs and overhead, our clientele are guaranteed the best value.

Leaky pipes or troubles with your toilet? Comet Plumbing & Sewer Co. offers expert service and repair for all residential and commercial plumbing in the South Bay and Silicon Valley area. From leaky faucets to under slab water leaks or pipe repairs, we have the knowledge and experience you need.

Locally owned and operated, we charge by the job, not the hour and you will never be charged extra for service at night, on the weekend or over a holiday. We provide upfront pricing before any job and will never start service without your okay.

Call us toll free today at 800-805-9025 for any of your plumbing needs.

• Pipe repairs and re-piping
• Installation of new fixtures including faucets, sinks, toilets, showers, bathtubs, and garbage disposals
• Appliance hookups including washing machines, ice makers, refrigerators, and more
• Leak repairs
Fully licensed, bonded, and insured, we’re happy to provide references upon request.

Comet Plumbing & Sewer Co. performs as a plumbing contractor with professional plumber service to satisfy any of your plumbing needs. We will send a plumbing expert to carry out any plumbing repair. Our plumbing service is always sewer emergency. We believe that it’s not the customer’s fault when a plumbing emergency arises. Toilets, drains, sewers, sinks, faucets, various pipes in kitchens and bathrooms break, leak, back-up, overflow and just plain don’t work sometimes. You do your best to keep your home in working condition, and we understand that. We will never charge you an arm and a leg just because it’s a holiday or because your toilet has water leaking everywhere from a backed up sewer pipe. We’re members of this community, and we believe that by treating our customers the way we would want to be treated, in a fair and honest manner, we can help out in our part of building the type of community that we want to live in. 

We have competitive prices and offer free estimates for any job and all work needed to make plumbing affordable.
We love plumbing and sewer work! Everyone at this company is a member of your community, and we strive to do the best job in any and every plumbing area of expertise. We do plumbing in San Jose, plumbing in Sunnyvale, plumbing in Mountain View, plumbing in Campbell, plumbing in Cupertino, plumbing in Los Altos, plumbing in Saratoga, plumbing ANYWHERE in the South Bay area and Silicon Valley. We’re your local bathroom plumber, kitchen plumber, water main plumber. That means we do faucet plumbing, sink plumbing, toilet plumbing and much, much more. If there is something that you think might be plumbing related or that you even need advice on when it comes to pipes, sewers, drains, or anything related to what a plumber can help with, don’t hesitate to call. We’re your local, top quality, top value, plumbers.

Our plumbers service Sunnyvale, San Jose, Atherton, Campbell, Cupertino, Los Altos, Los Gatos, Menlo Park, Mountain View, Palo Alto, Santa Clara and Saratoga, CA. With over 70 years of community ties, community volunteer and professional plumbing and sewer work within Silicon Valley, we strive to always give the most honest and fair pricing served with the best customer service and high quality workmanship. Our quotes are always 100% free and our rates never go up because we believe that emergency plumbing is not something you can control or plan, so it should NEVER be the customer's fault if something should happen on weekend, holiday or in the evening. So give us a call! We're your local, friendly and dedicated plumbers.

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Great Company,Great Service Techs.I had a plumbing problem that required a plumbing contractor not some guy in a truck with a 50' power snake .
The man from Comet was very professional Did not talk down to me as others have .Assessed the problem gave me a very reasonable estimate and preformed the work on time.And no extra charges!!!!! I would use this company again and do not hesitate and recommend it. Its nice to know there are still honest and reliable Plumber Contractors out there
Bruce Houseman   12/5/2011

Richard K. April 12, 2011 
Los Altos plumber. ★★★★★
I found this company in my Los Altos Yellow Pages. They checked out my hot water heater which was very noisy and recommended we change it. I never thought about buying a larger capacity water heater for our home until the plumber had mentioned it. So not only do I have a new heater but also more hot water. Now the family will be happy :)

Deepak S. March 09, 2012 
Reliable and professional service. ★★★★★
My family and 
I just moved in, my mother was alarmed when the kitchen sink wasn't draining properly. The owner of Comet Plumbing came quickly to check the plumbing under the sink which I knew was old.

Andrew unblocked the clog and installed new pipework beneath the sink. I am very grateful,it was only $99.00 for this great service.


100 S. Murphy Ave.

Ste. 200

Sunnyvale, CA 94086

Tel: 408-502-0932
Fax: 800-805-9025

​Toll Free: 1800-805-9025