Water Leak Detection in Barcelona | Non-Invasive Technology

The water meter spins without using any tap: It is the most objective and unappealable sign. Turn off all stopcocks and observe the meter for 5 minutes; if it moves, you are literally losing water through the pipe.

Exorbitant water bill (increase of more than 30%): If your average consumption has risen from 15 to 25 m³ without having guests or filling a pool, it is almost certain that there is a leak in the indoor network.

Bulging walls, peeling paint or swollen parquet: Internal humidity begins to lift the paint or wallpaper. In **Sarrià** flats, where hardwood parquets abound, this symptom is devastating because the wood absorbs the water and swells irreversibly.

The risks of not detecting it in time: A 0.5 mm diameter leak can spill more than 200 liters of water a day into your slab. This generates the appearance of **black mold fungi** (Stachybotrys chartarum) that seriously affect the respiratory health of the inhabitants, in addition to compromising the metal structure of the reinforced concrete. Acting in time is a matter of health and economy.

At Plumber Express we invest in professional-grade equipment that not all plumbers in Barcelona possess. Our digital geophones with variable frequency filters allow us to isolate the noise of the leak from the street traffic or the vibrations of household appliances. The FLIR T530 thermal camera detects temperature differences of 0.02°C, clearly showing the halo of humidity on the wall. Finally, the hydrogen tracer gas is the definitive technique for PE (polyethylene) pipes that do not transmit sound. Thanks to this trio of techniques, we have a 99% success rate on the first visit.

The **Eixample** buildings built between 1900 and 1950 present a unique challenge for leak detection. Their cast iron and lead pipes have mechanical oakum and lead joints, which dry out and shrink over the years. When a leak appears in these buildings, the water usually seeps through the rolled iron beams, appearing several tens of meters from the breaking point. Our geophone and thermography are essential in this context because they allow us to trace the moisture without needing to lift the entire original hydraulic pavement, which is required by the City Council's historical heritage regulations.

Two months ago we went to a property on the **Gran Via de les Corts Catalanes** where the administrator had been paying €400 more for water for 3 months without finding the cause. The leak was in a copper pipe that crossed the inner courtyard. The sound of the leak was camouflaged with the noise of the pressure pumps. Using the geophone and signal triangulation, we located the leak at the joint of a general stopcock. The repair cost €450 (including detection), but we avoided a reform estimated at €3,000 proposed by another company. The administrator continues to hire us for all the reviews of his properties.

More than 1,000 leaks successfully located in 2025: We are pioneers in the application of tracer gas in Barcelona, reducing the collateral damage of repairs.

Report with video and photos: We show you the recording of the thermal camera and the geophone report so that you see with your own eyes the evidence of the leak and understand why it is necessary to repair at that point.

Immediate repair in 85% of cases: We carry the spare parts for most materials (copper, PEX, iron) in the van, so we can solve the breakdown on the same day as the diagnosis without the need for a second visit.

Don't keep paying for water you don't consume. With our technology, we know where the problem is before we lift the first tile. Request your no-obligation diagnosis and find out why we are the trusted company for property administrators and individuals in Barcelona.