Leak Detection  Services

Leak detection is the process of finding hidden water or gas leaks before they cause expensive damage to your home or business. At New Flow Plumbing, our specialists use advanced tools and proven methods to pinpoint the exact source of leaks, saving you time, money, and stress.

What is Leak Detection Service? and Its Importance

Leak detection services involve locating hidden water or gas leaks in plumbing systems before they cause serious damage. This service is important because leaks often develop behind walls, under floors, or underground, where they can go unnoticed for weeks or months. Without professional leak detection, even a small leak can waste thousands of gallons of water, raise utility bills, and lead to costly repairs from water damage or mold growth. Early detection helps homeowners and businesses prevent structural issues, protect their property, and save money in the long run.

Close-up of a leaking underground water pipe spraying water, showing a burst that requires professional leak detection and repair.
Acoustic leak detection device used by a plumber to locate hidden underground water leaks near a building.

Fast, Accurate Leak Detection You Can Rely On

Leaks often start small but quickly turn into major problems. A sudden spike in your water bill, damp spots on walls or floors, or the sound of running water when no tap is on are all warning signs. Our professional leak detection service identifies the problem fast, so you can avoid water damage, mold growth, and wasted water costs.

We use advanced, non-invasive equipment to locate hidden leaks, including:

  • Acoustic Leak Detectors - To listen for water escaping inside pipes or walls.
  • Thermal Imaging Cameras - To find temperature changes caused by moisture.
  • Moisture Sensors and Pressure Tests - To confirm leaks before any digging or wall cutting.

These tools help us locate leaks precisely without unnecessary damage to your property.

Common Types of Leaks We Find and Fix

Leaks can appear anywhere, from underground lines to inside walls. Here are the most common types we handle:

Water Line Leaks

Corrosion, tree roots, and shifting ground can damage your main line.

Slab Leaks 

Hidden beneath your foundation, these can cause cracks and structural issues.

In-Home Leaks

Behind walls, ceilings, or floors, often leading to mold or water stains.

Gas Leaks

Extremely dangerous; if you smell gas, leave immediately and call for emergency help.

Prevent Costly Damage Before It Starts

A minor leak today can become a major expense tomorrow. Undetected leaks can ruin drywall, flooring, or even your home’s foundation. Scheduling a professional leak inspection early prevents long-term damage and helps lower your utility bills. With New Flow Plumbing, you’ll get a detailed assessment and lasting repair solutions designed to protect your property.

Our Leak Detection Process

Our proven process ensures fast, accurate leak detection with minimal disruption to your home or business.

Inspection and Evaluation

We begin with a detailed visual inspection and discuss your concerns. Signs like water stains, musty odors, or rising water bills help us pinpoint potential leak areas.

Advanced Leak Detection Tools

Using non-invasive technology such as acoustic sensors, thermal imaging, and pressure testing, we locate leaks precisely, without unnecessary digging or damage.

Leak Confirmation and Repair Plan

Once the source is found, we confirm the leak’s location and assess the damage. Then we recommend the best, most cost-effective repair method to stop the leak and prevent future issues.

Professional Repair and Final Testing

Our licensed plumbers fix the problem using safe, modern techniques. After the repair, we retest the system to ensure your plumbing is fully restored and leak-free.

24/7 Leak Detection Service

Leaks don’t follow business hours. That’s why we offer 24/7 emergency leak detection and repair. Whether it’s late at night or during a weekend, our team can arrive within 60-90 minutes to stop active leaks and prevent further damage.

You’ll get:

  • Same-day service and fast response times
  • Licensed, bonded, and insured professionals
  • Honest estimates with no hidden fees
Handheld gas leak detector used by a plumber to identify a gas leak under a kitchen sink during inspection.

Cost of Leak Detection

The average leak detection cost in Los Angeles ranges from $150 to $500, depending on the leak’s size and location. Smaller indoor leaks are easier to find, while underground or slab leaks may require advanced tools. New Flow Plumbing offers upfront pricing with no hidden fees, helping you fix leaks early and avoid costly water damage.

Infographic showing average and detailed cost ranges for professional leak detection services in Los Angeles, including video camera, smoke, acoustic, and thermal testing methods.

Why Choose the New Flow Plumbing Team

At New Flow Plumbing, we treat every home and business as if it were our own. Our reputation is built on reliability, accuracy, and genuine care for our community.

  • Local Expertise - We understand Los Angeles plumbing systems inside and out.
  • Advanced Technology - Modern leak detection without unnecessary demolition.
  • Transparent Pricing - Fair rates with clear explanations.
  • Trusted Service - Family-owned, licensed, and insured for your peace of mind.

When you work with us, you get more than leak detection, you get lasting protection for your property.

New Flow Plumbing emergency service car

Testimonials & Mini Case Studies

Called New Flow plumbing for my leaking water heater. They were very clean, friendly, sincere, and knew what they were doing! Armen was super helpful in explaining what needs to be done and what our best options are. Thank you New Flow and team!
Seda Keshishyan
Seda Keshishyan
We needed a trenchless sewer repair. They not only gave us a very reasonable quote, they were by far the most responsive, and gave us the best expanation. Brothers Shaq and Armond are really great and very responsive. I would highly recommend them to anyone.
Christopher Nichols
Very knowledgeable and professional. I had a leak in my backyard and after calling many companies and being told the leak was too small for their equipment, or a plumbing company who told me I had to have a “leak detection company.” This may have absolutely been the case, but I was not sure who to contact from there. New Flow came out, and with their expertise found my leak quickly. They were efficient and capable. Will be using them in the future!
Joshua McEuen

Call for Professional Leak Detection Today

If you suspect a water or gas leak, don’t wait for damage to spread. Contact New Flow Plumbing today for fast, accurate, and affordable leak detection service.

FAQs

Common signs include unusually high water bills, damp spots on floors or walls, mold growth, or the sound of running water when all taps are off. A professional inspection can confirm the source.

In Los Angeles, leak detection costs typically range from $175 to $350, depending on the location and type of leak. Complex cases may cost more if advanced equipment is required.

Yes. Modern leak detection uses tools like acoustic sensors and thermal imaging, allowing plumbers to find leaks without breaking walls or floors.

Absolutely. Even a small hidden leak can cause structural damage, mold growth, and high utility bills if not repaired quickly.

Most residential inspections take 1 to 2 hours, but larger or more complex systems may take longer depending on access and plumbing layout.

Yes. Many leaks remain hidden behind walls or underground for months. Early detection prevents costly repairs and water waste.

Yes. We provide 24/7 emergency service across the area for sudden leaks or water damage situations. Call 310-299-9284 anytime.

Our Hydro Jetting Service Area

Because we dispatch from Van Nuys, we can reach you faster across the San Fernando Valley and greater Los Angeles. We service Sherman Oaks, North Hollywood, Panorama City, Valley Glen, Encino, Studio City, Reseda, and surrounding neighborhoods.

Scheduling window: Same-day appointments available for most calls before 2pm. Pro tip: Text us a short video of the problem for quicker triage.