American Leak Detection of North Bay and Peninsula

Serving Marin, Napa, Solano, Sonoma, San Mateo and North Santa Clara Counties

  • Santa Rosa 707.578.5325
  • Napa 707.253.0330
  • Fairfield 707.437.5325
  • San Rafael 415.883.1690
  • San Mateo 650.574.5325
  • San Carlos 650.631.7884
  • Campbell 408.866.5325

1201 Andersen Dr., Suite N San Rafael, CA 94901

Welcome to American Leak Detection, the "Original Leak Specialists." Since 1974, we have detected nearly 5 million leaks, saving homes and business owners billions of dollars in costly repairs.

American Leak Detection offers a non-invasive way to test and locate leaks on the potable hot and cold water systems through out the house. Our detections include a thoroughly check of the water system, identification of the origin of the leak, multiple estimates for the repair and a solid guarantee with our services.

Accurate leak detection requires a combination of two things:

Five reason you can depend on American Leak Detection:


New Solutions:


American Leak Detection, Leak Detecting Instruments, San Rafael, CA


Local Service Area

American Leak Detection of North Bay and Peninsula offers service in the following locations and their surrounding areas:

Palo Alto • Redwood City • San Mateo • San Rafael • Vacaville • Fairfield • Napa • Petaluma • Santa Rosa • Sunnyvale

Customer Testimonials

Owen was very friendly and did an excellent job. he left having cleaned up everything . I can;t saye enough good about him/

jim r - atherton, CA

Was very pleased as to how fast the response was once I had contacted you. Wish the other companies involved in the situation, at my house, were as responsive. Work was done quickly, and Mario was wonderful. Thank you!

Etta M - Redwood City, CA

You completely exceeded my expectations. Every step of the way was handled efficiently, courteously, professionally. I'm sorry I don't remember the name of the technician or the contractor, because both were superb.
I have already referred you to another client. Thank-you so much!!

Elaine L - Sebastopol, CA

Christian was very competent and effective with the equipment used on site

John L - California State Parks - Santa Rosa, CA

The company and the technicians both exceeded my expectations. The company through Amy set the date and time and the technicians were there a few minutes early each day. To me that is very important. In addition, the technicians were very attentive to their work and apparently value their employment. Outstanding job indeed.

Richard B - Portola Valley, CA

Mario was excellent-prompt, polite, explained everything as he worked, did thorough testing after the repair and cleaned up and put the grass back! Great work!
And this was after Roto Rooter refused to dig the leak your team found in Friday. We wasted a lot of water between Friday and Tuesday but your team was spot on. Thank you!

Barbara - , CA

I called on a Saturday and got an IMMEDIATE response from Alana (?), I'm sorry, I forgot the name of the gal I spoke to. She happened to be in the office Saturday, and Thank her for me please! Amy contacted me on Monday, and they were both very helpful in moving up the appointment for me due to a leak that quickly grew worse. I understand it was difficult to arrange the move up, but I really appreciated since it was causing further damage. The ladies, and the work crew were friendly, understanding, and helpful with the info I needed.

Richard A - Foster City, CA

Outstanding young man, very bright!

J.L. C - San Mateo, CA

The leak detection was accurate and the repair was competed in a very competent and professional manner. I was skeptical, but you exceeded my expectations and did a great job!

David M - , CA

I am 84 years old. Without hot water for a week until I called Leak Detection. These three young men were extremely professional in every way. My problem turned out to be bigger then I even anticipated. These three seemed to know just how to solve it. I am so grateful to them for bringing my life back to normal. I shall spread the word about this company and these three fellas. Please, see that they know how much I appreciate them and what they did for me.

Betty J O - California, CA

Michael was prompt, professional, knowledgeable and friendly. I was very impressed with him and the service he provided.

Dee G - Sonoma, CA

Both technicians were professional and courteous. Michael confirmed we had a leak and Sean found the leak.

Michael p - novato, CA

Both technicians were professional and courteous. Michael confirmed we had a leak and Sean found the leak.

Michael p - novato, CA

Thank you to all for your help, expertise and professionalism. This problem is slightly unusual because a leak wasn't found in any of the lines yet the pool lost 5 inches of water when the pool motor was running. Tomorrow will be the first day in over a week that the pool will cycle through. Will continue to monitor water level. Greg was super, very knowledgeable, thorough in his testing and professional in his attitude. Alayna, Rebecca and Sean also were most helpful, friendly and professional when I called the office. I would highly recommend American Leak Detection.

Maryellen B - Santa Rosa, CA

Prompt, courteous, thorough, most knowledgeable. A pleasure!

Stephen K - , CA

Greg did an excellent job troubleshooting an old and complicated set of pipes.

Michael M - Forestville, CA

Carlos was very informative and explained the service as he went through the testing. This was very helpful in understanding what was going on and easing my mind out the testing. Great service! Top Notch!

Paul D - Vacaville, CA

Efficient, courteous and effective!

evan k - san anselmo, CA

Erik was polite, informative and explained everything as he did it. He was very professional. I don't usually take the time to put out a recommendation, but I posted it to our greater community as a recommended service

mark t - menlo park, CA

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