Hidden water leak detection in Al Alya, Riyadh: when to call a technician

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

Before we start: what we know about Al Alya

The centre of Al Alya is at 24.6931, 46.6845, about 2.5 km from the centre of Riyadh, with an approximate radius of 3 km. The service-area circle on the map below is drawn from this point. Al Alya is largely commercial, with shops and offices.

The centre of Al Alya sits about 622 m above sea level (SRTM open elevation data). Main roads in or near Al Alya: King Fahd Road, Makkah Road, Al Olaya Street.

Hidden water leaks in Al Alya, Riyadh, are usually first suspected in the commercial buildings that make up much of the district, where shops and offices share pipework, storage tanks and long runs of concealed supply. Al Alya's centre lies at 24.6931, 46.6845, roughly 2.5 km from the centre of Riyadh, and the area reaches out with an approximate radius of 3 km. Because the district is largely commercial, a leak in one unit can affect neighbouring premises, so the first check is whether the loss is confined to one outlet or appears across the building's supply. Sitting at about 622 m above sea level, the site is not unusual in elevation, so pressure patterns are better judged from the building's own plumbing than from its height. Start by comparing water use against normal trading hours, look for damp patches, staining or unexplained rises in the meter, and note whether the loss continues when no tap is running.

What is left to the site visit is the work that needs the pipework in front of you. A technician will confirm where the water is actually escaping, whether it sits in buried supply, behind finished walls, under a slab or inside a storage tank, and will decide how invasive the search needs to be. Tanks are a common case in commercial premises, and if the tank lining is involved, the cost range for internal coating is SAR 25–70 per m², which depends on the surface area and condition found on inspection. The visit is also where the technician will judge whether a repair can be made locally or whether a larger section of line needs replacing.

To help the technician arrive prepared, have the building's layout to hand, including where the water main enters, where the meter sits and which shops or offices share each branch. Note when the leak was first noticed, whether it worsens at certain times of day, and any recent works, alterations or new fittings in the premises. Give access details for ceilings, service ducts and roof tanks in advance, and let the occupants of affected units know when work will take place, since trading may be disrupted while the search is carried out.

Some signs can be watched for a few days; others need a technician straight away — the signs list above helps you decide.

Signs worth paying attention to

The following signs are worth checking before they grow:

• A water bill higher than usual with no change in use
• The meter keeps turning with every tap closed
• A hissing or trickling sound in the wall after the taps are off

The most common causes

• A cracked pipe under floor tiles — we check this before anything else.
• A corroded joint inside a wall — we check this before anything else.
• A hot line that expands and contracts with use — we check this before anything else.

Tools and methods, and when we use them

From the first visit to the report

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 Alya

Questions from Al Alya

Mistakes that cost more

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

The written outputs

The written output: a technical report with the readings, the likely leak position and a confidence level. The report is numbered and can be checked with its verification code.