Listen for Pressurized Leaks Hidden from View
Escaping water can create vibrations that travel through pipes, concrete, and surrounding materials. Acoustic leak detection uses sensitive electronic listening equipment to identify and compare those sounds, helping our technicians narrow down a leak that cannot be seen.
How Acoustic Detection Works
The sound made by a leak varies with water pressure, pipe material, pipe size, depth, soil type, and the size of the opening. A technician listens at multiple points and compares signal strength and sound characteristics to identify the most likely area.
Acoustic testing is especially useful for pressurized water lines beneath slabs, inside walls, and underground. When conditions make the signal difficult to distinguish, we may combine listening with line isolation, pressure testing, thermal imaging, or other diagnostic methods.
Signs You May Need This Service
Hissing, rushing, dripping, or humming sounds
A suspected pressurized leak with no visible source
Water loss beneath a slab or underground
A meter that moves while plumbing fixtures are off
Low pressure or continuous pump activity
How We Locate the Problem
- Confirm the symptoms and reduce controllable background noise when possible.
- Identify accessible listening points and the likely pipe route.
- Listen and compare signals at multiple locations.
- Correlate the acoustic findings with other test results and mark the suspected area.
California Code and Permit Considerations
Acoustic findings are diagnostic evidence and depend on pressure, pipe material, depth, background noise, and access. A suspected sound location should be correlated with meter, isolation, pressure, or other testing before invasive access is recommended.
When the investigation leads to plumbing alteration, the repair should follow the 2025 California Plumbing Code and applicable local requirements for materials, joints, support, potable-water protection, testing, permits, and inspection.
Why Choose Capital City
Helps locate concealed pressurized leaks without immediate demolition
Can be used on interior, slab, and buried water lines
Supports more focused access and repair
Performed as part of a complete diagnostic evaluation
Get Started Today
Hear Water Running but Cannot Find the Source?
Contact Capital City for professional acoustic leak detection. We will investigate the sound, test the system, and narrow down the most likely leak area.