American Leak Detection
Company Overview
When you spot a leak, avoid standard plumbing services - trust the experts at ALD.
**Service Areas: Napa, Northern Santa Clara Areas (excluding San Jose)**
The ALD team pinpoint and fix hidden water issues, from spa systems, irrigation systems, or sewer leaks.
Hidden water loss result in costly repairs and waste thousands of gallons. Our team employs proprietary technology to locate leaks without destruction.
Experience matters - our team boast extensive experience in precise diagnostics. As a result, we're unmatched in leak detection.
Independent but supported by industry-leading training, every technician excels at the national HQ for reliable results.
Bring this coupon for a $25 discount.
The owners, run our company since 2001. Our expert technicians serve local communities, preserving countless resources for homeowners. Today, we repair 120+ leaks each week - a testament to our precision.
Years ago, we earned the esteemed International Franchise Association ""Top Performer"".
No leak is the same - our team tackles them all with expertise!
Business Services
- Plumbing inspection
- Plumbing installation or replacement
- Plumbing repair
- Sewer installation
- Sewer repair
- Water pipe installation
- Water pipe repair
Business Location & Hours
Mon: | 7:30 AM - 4:30 PM |
Tue: | 7:30 AM - 4:30 PM |
Wed: | 7:30 AM - 4:30 PM |
Thu: | 7:30 AM - 4:30 PM |
Fri: | 7:30 AM - 4:30 PM |
Sat: | Closed |
Sun: | Closed |
Recommended Customer Reviews

Didn't find any leak or cause of moisture issue, but helped eliminate a lot of potential causes. Very thorough, professional. Gave me some peace of mind at least. Oh and they scheduled and showed up very quickly after I called!

I am a new pool owner and Paul did an amazing job of teaching me things I didn't know along with helping detect a leak. Great job, thanks!

Can't give out enough positives. Great communicators, from the office folks to the technicians. They were efficient, and they were compassionate. They explained the process every step of the way. It was a pleasure working with them. I would definitely call them if I have a problem in the future.

This company did such a great job. Took a great intake, sent someone who squeezed me in. The technician was fantastic. Found the leak quickly and wrote a report detailing the whole thing. Probably no one wants to call for a leak, but these people were professional, kind and extremely competent. Wish I could give another star. Kathie

It's NEVER fun to get a leak. But if you have one this is the place to call. This is the second time I've used ALD and, once again, they surpassed my expectations. This is a two step process. 1) Finding the leak which is hardly ever easy and 2) providing a quote to fix it.
This particular job entailed finding a leak underneath a concrete slab for the PVC pipes that run my irrigation system. Mike came out and spent well over an hour just finding the leak and quoting a price to fix it. I got other quotes to repair this and in the end I used ALD as Mike was already very familiar with it and there price was very reasonable.
Mike came back a few days later and it took pretty much all day to fix it after running into complications with roots and old pipes all jumbled together. But he got it all sorted out, tested it and patched the hole in the concrete.
As I said, getting a leak is never fun but with ALD on the job you know everything will be fine.

I agree that I would give 10 stars. Responsive, top notch! Goda and Jonathan were amazing! The best, amazing service and competency.

We called out ALD to detect a leak in our home. They requested $400 for the first two hours. They finished within half an hour and gave us the incorrection location of the leak. We tore out our walls to fix this leak only to learn out water heater was the source of the leak.
Despite this egregious mistake we were still charged the $400. Would not recommend to anyone.

Right after Xmas, I had a major leak in my main water line. Called American Leak and very quickly they had the right people on my property to find and fix the leak. John and Nick were fantastic. John found the leak in under twenty minutes and Nick fixed it perfectly. Both are smart, competent, and great guys. Very happy with their work. Highly recommend them. Thank you guys. Merry Xmas.

Had a major Leak in my pool. We're talking about a river rolling down the street. Neighbors were not happy. Called ALD and got some short term advice to stop the flow and scheduled an appointment within 4 days.
John Stephenson showed up on schedule and diagnosed the problem in less than 30 minutes. He stopped the leak and gave me a reasonable estimate to resolve a tough problem.

We had our second underground leak on our property in Cotati which is over one acre and ALD did a great job finding our leak , it was under a deck so it wasn't easy to find , and they came back the next day to fix it as we were trying to figure out if we could do it ourselves I'm glad we let them do it. I would recommend their services to anyone especially if you have a country property.