Hidden water leak detection in Al Mrjan, Jeddah: cost & published offers

Prepared by the technical team · editorial review · last updated 13 November 2026 · Sources

Why hidden water leak detection differs in Al Mrjan

The centre of Al Mrjan is at 21.6875, 39.1001, about 17.7 km from the centre of Jeddah, with an approximate radius of 3.1 km. The approximate area shown on the map is centred here. Main roads in or near Al Mrjan: Madinah Road, Prince Sultan Road, Al Takhayyul Street.

Al Mrjan is about 0.7 km from the sea coast (OpenStreetMap). The centre of Al Mrjan sits about 8 m above sea level (SRTM open elevation data).

Picture a homeowner in Al Mrjan who notices that the water bill has crept up for no clear reason, or that a damp patch has appeared on a wall that was dry last month. Many owners in this situation assume the problem is a dripping tap or a running toilet, and they spend days checking fixtures before they realise the leak is somewhere hidden, under a slab, inside a wall, or along a buried supply line. In a villa or apartment building, a concealed leak can run for a long time before anyone sees a visible sign, so the early clues are often small: a meter that keeps turning when every tap is shut, or a floor that feels cool in one spot.

The local setting matters here. Al Mrjan sits at about 8 metres above sea level and lies roughly 0.7 km from the coast, which means the soil and the groundwater near the surface can be affected by salt and moisture from the sea air. For an owner, that makes it worth taking damp patches and salt-looking staining seriously rather than treating them as surface cosmetics, because moisture moving through masonry or into a buried pipe bed can spread quickly. The area's position about 17.7 km from the centre of Jeddah, within a radius of roughly 3.1 km, also means that a tradesperson may need a planned visit rather than an instant one, so it helps to describe the symptoms clearly when you book.

If you suspect a hidden leak, start by reading your water meter with every tap and appliance switched off, then check again after an hour. Next, note where you see moisture, staining, or unusual warmth, and photograph it so the technician has a record. Ask whether the work will include a tank check, since a storage tank that needs internal coating is priced at SAR 25–65 per m², so the size of the tank will shape the overall figure. Finally, request a written scope listing the detection method, the areas to be opened or tested, and what will be repaired, so you can compare quotes on like-for-like terms before agreeing to any work.

Prices shown on this page come from our own published price list for the city; the final price is set after inspection.

Signs that call for hidden water leak detection

The following signs are worth checking before they grow:

• A damp patch that slowly grows on a wall or ceiling
• A hissing or trickling sound in the wall after the taps are off
• The meter keeps turning with every tap closed
• A water bill higher than usual with no change in use

Where the problem usually comes from

• A common cause: a hot line that expands and contracts with use.
• A common cause: a corroded joint inside a wall.
• A common cause: a cracked pipe under floor tiles.

How we choose the tool in Al Mrjan

How the work is done, step by step

1. Meter test: We stop all use and watch the meter to confirm whether water is actually being lost.
2. Line isolation: We close valves one line at a time to see which line loses pressure.
3. Acoustic listening: We follow the sound of water escaping under pressure and compare its strength between points.
4. Thermal imaging and moisture mapping: We map how far the wet area spreads behind paint and tiles.
5. Documentation: Readings, photos and the likely position go into a written report.

Quick comparison: facts and costs in Al Mrjan

Common questions about hidden water leak detection in Al Mrjan

What we advise against

• Repainting the stain while the moisture keeps coming back
• Breaking tiles at random before the line is identified

What you get after the work

You receive: a technical report with the readings, the likely leak position and a confidence level, in a technical report with a verification code.