Underground tank leak detection for residential buildings in Al Nhda, Riyadh

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

Underground tank leak detection in Al Nhda: the local context

The centre of Al Nhda is at 24.7608, 46.8061, about 14.2 km from the centre of Riyadh, with an approximate radius of 1.2 km. The service-area circle on the map below is drawn from this point. The centre of Al Nhda sits about 596 m above sea level (SRTM open elevation data).

Main roads in or near Al Nhda: Prince Bandar bin Abdulaziz.

Do underground water tanks in a residential building in Al Nhda leak, and how would you know? For property owners here, the answer starts with location. The centre of Al Nhda sits at 24.7608, 46.8061, about 14.2 km from the centre of Riyadh, and the district has an approximate radius of 1.2 km. The centre of Al Nhda sits about 596 m above sea level (SRTM open elevation data). Because a building's tanks are usually buried or semi-buried, a slow leak can go unnoticed for a long time. A sudden drop in pump performance, damp patches on a nearby wall, or a water bill that rises without explanation are common signs that a tank deserves a closer look.

Inspection normally begins with a visual check of the tank's exterior, access cover, and connecting pipework, followed by an assessment of the internal condition. Where the inner lining has worn or cracked, a coating may be needed, and that work is typically priced per square metre, in the range of SAR 25–70 per m². The technician will note the tank's size, the state of the walls and floor, and any signs of water loss around the inlet and outlet lines. The findings are then explained to the owner in plain terms, with a clear picture of what is damaged, what is still sound, and which repairs would address the problem.

Before the visit, gather what will help the inspector work efficiently. Note when you first noticed a change, such as lower pressure, damp areas, or a rising water bill, and keep any recent meter readings. Make sure the tank access points are reachable and that the area around them is clear of stored items. If the building has a management office or caretaker, let them know in advance so that access can be arranged without delay. Having these details ready means the visit can focus on finding the cause rather than on questions that could have been answered beforehand.

For a whole building, a survey of the shared systems comes before unit-by-unit work.

Signs that call for underground tank leak detection

If you notice one of these signs in Al Nhda, it is a good moment to talk to the team:

• The tank needs refilling faster than usual
• Damp or salt marks on the tiles above the tank
• A noticeable drop in the water level overnight
• The pump runs for longer periods

Causes we see in the field

• Construction joints and corners — we check this before anything else.
• Cracks in the concrete tank walls or floor.
• A float valve that does not close, so water is wasted — we check this before anything else.

Tools and methods, and when we use them

From the first visit to the report

1. Safety first: Tank lids and confined spaces are handled with ventilation and a second person on site.
2. Documented level test: Filling and use are stopped and the level is recorded against time.
3. Isolating the tank from the network: This tells us whether the loss is from the tank body or from the supply line.
4. Checking the body and connections: Inlet, outlet and overflow connections are inspected.
5. Recommendation: You get the next step in writing: repair, waterproofing or a line test.

Facts and costs — Al Nhda

Questions from Al Nhda

Common mistakes we see

• Waterproofing the tank before confirming the loss is from the tank and not the line
• Ignoring the float valve

What you get after the work

You receive: the written level-test result and the recommended next step, in a technical report with a verification code.