Johns Coupon for slab leak


John’s Plumbing Company uses state-of-the-art, non-invasive water leak detection services and CO2 Pressure testing to accurately pinpoint leaks and determine the ideal solution for repair or repiping. 

We can perform water leak detection for residential and commercial customers and help to identify potential issues that may lead to flooding, such as excessive water pressure. We have more than 10 years of experience in water leak detection services in Los Angeles, CA and the surrounding areas and can diagnose water leaks quickly and make the ideal repair.  

When You Need Fast Water Leak Detection 

If water leaks are not addressed quickly, they can lead to structural property damage, floods and water damage, as well as hazardous mold growth. Mold only requires a small amount of moisture to flourish, so even small leaks can lead to costly remediation needs. 

Understanding the common signs of a water leak is crucial to immediate detection to help you avoid damages to your home and potential health issues form mold. 

Common Signs You Have A Water Leak

Some signs of leaks are easy to spot, such as active water or moisture, but many water leaks happen behind walls or underneath the slab foundation. Hidden water leaks can go undetected for long periods of time leading to extensive damage, as well as high water bills. 

Common signs of water leaks include: 

  • Excessive Water Bills
  • Discoloration or Water Stains on Ceilings and Walls
  • Mildew or Musty Odors
  • Fluctuation or Loss of Water Pressure
  • Damp or Warm Spots on Flooring
  • Water Pooling in Yards 
  • Corrosion on Plumbing Fixtures

Water Leak detection services

Professional, Reliable, Experienced Water Leak Detection Los Angeles, CA  

At the first sign of a water leak, call the experienced leak detection specialists at John’s Plumbing Company. Once our team is on site, we will assess the situation and determine the next best steps. We ensure your home is protected at all times and use only safe and proper water leak detection methods. 

We can perform pressure testing to identify leaking lines behind walls, electronic leak location for slab leaks under the foundation, and identify the cause of leaks. If the home has weakened pipes or excessive water pressure, we will make recommendations to repair the leak and upgrade the plumbing to prevent future problems. 

Preventing water leaks is not always possible, but we can help home and business owners to properly maintain water systems and educate on what to look for in potential water system dangers.

Once we have identified the leak, we will offer solutions for repair including direct repair of the leaking pipes, rerouting the leaking lines, or repiping the entire water system. We offer convenient scheduling, as well as 24 hour emergency services to help you when you need it most. 

John’s Plumbing Company has more than 10 years of experience in diagnosing and troubleshooting even the trickiest water leaks. We can find and repair leaks on the interior of the home, underground leaks, and exterior property leaks and we are committed to exceptional customer service.  

For professional and expert water leak detection in Los Angeles, CA and the surrounding areas, call John’s Plumbing Company today (323) 422-7485.

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Our water heater began spewing water this morning.  John was the first plumber in the area to answer my call, and was able to get to my house within 10 minutes of the call.  He fixed the problem promptly and for what seemed to be a reasonable price.  He was friendly and informative.  I will definitely call John again and will recommend him to neighbors.  Thanks, John!
-Caitlin R


John has done numerous plumbing projects around my house and has always done excellent work.  He's quick to respond to my inquiry's and even replaced my water heater on a Sunday.  Most recently, I had him install a water purification system and new faucet.  His prices are reasonable and he will continue to be my go-to plumber.
-Rachel R.

Very helpful guy, thank you for the quick service and low service fee 🙂 Job well done.
-Sandra F.


These guys are the best! If you're looking for a legit plumber, call John's Plumbing Company in Atwater Village. Fairest price, honest and very knowledgeable!
-Ashley C.

Project: Install a Tankless Water Heater System

Comments: john and company were very efficient. they took their time and got the job done right. they replaced my standard water heater with a rinnai tankless water heater. while they were here, I also had them install a earthquake shut-off valve. great job at a reasonable price. I am keeping john as our regular plumber for the future.
Sergio S. in La Crescenta, CA

Project: Install, Repair or Replace Plumbing or Fixtures

Comments: My tenant is happy so I am happy. John was very patient with me and explained everything before he did the job. Very nice over the phone and I will use him again for future plumbing needs.

 Marilyn L. in Pasadena, CA

Project: Install, Repair or Replace Plumbing or Fixtures

Comments: I am very pleased. I've had John do the top priority job of repairing a leaking drainpipe and his work looks to be top notch. I'm definitely thinking of using him for the larger job of repiping the whole house (replacing the failing M-type copper with L-type). And again, John's bid is within my budget considerations. Highly recommended.

Homeowner in Glendale, CA

Project: Install or Replace a Water Heater

Comments: John was great. He gave me options and worked with me to find a solution that worked within my budget. Very professional. I will definitely use him again for any plumbing issues.

Laura W. in South Pasadena, CA

Project: Install or Replace a Water Heater

Comments: John was very responsive to my initial call, showed upon time and did excellent work at a fair price to replace my water heater. I highly recommend him and I plan to use him for future plumbing needs

Gary P. in Sherman Oaks, CA

Camera Locate Breakage for a Plumbing System

Comments: We had them run a snake from our sewer line out to the street, as we have lots of trees with roots that sometimes get into the line. They came as scheduled, did a great job and the price was as quoted.

Colleen L. in Pasadena, CA


Monday, Open 24 hours

Tuesday, Open 24 hours

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Thursday, Open 24 hours

Friday, Open 24 hours

Saturday, Open 24 hours

Sunday, Open 24 hours


John's Plumbing Company

3847 Brunswick Avenue, LA, Ca, 90039

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