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

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

What is specific about Al Msana for underground tank leak detection

The centre of Al Msana is at 24.5789, 46.7300, about 16 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. Main roads in or near Al Msana: South Ring Road, South Ring Road, King Fahd Sub Road.

The centre of Al Msana sits about 572 m above sea level (SRTM open elevation data). The nearest wadi channel is about 0.4 km from the centre of Al Msana (OpenStreetMap).

Picture a homeowner in a residential building in Al Msana who notices that the water bill has crept up for no clear reason, or that the damp patch on a garage wall seems to grow after rain. Underground water tanks serve many such buildings, and a leak is easy to miss because the tank sits out of sight. Owners in this position usually want to know whether the tank is the cause, how much checking is sensible, and whether repairs will be expensive before anyone commits to work.

The local setting matters here. Al Msana sits at 24.5789, 46.7300, about 16 km from the centre of Riyadh, with an approximate radius of 1.2 km, so it is a compact area where many buildings share similar tank designs and ground conditions. Its centre lies about 572 m above sea level, and the nearest wadi channel is about 0.4 km from the centre. For an owner, the wadi point is a reason to watch how the tank and its surrounding ground behave after heavy rainfall, since water moving through nearby channels can affect the soil around a buried structure. Repair estimates should also account for the cost of lining the inside of the tank, which is typically quoted at SAR 25–70 per m², so measuring the tank's internal surface area early gives a realistic starting figure.

A practical order of action helps keep things manageable. First, record your water meter reading on a quiet day with no taps running, then take a second reading after a set interval to confirm whether water is still moving. Second, inspect the tank access points and the area around the tank for wet soil, cracks in visible walls, or pooling after rain, and note what you see with dates. Third, ask a qualified technician to test the tank and pipework and to report the findings in writing. Fourth, once the leak point is known, obtain a written quote that lists the internal surface area and the coating method. Finally, arrange the repair and schedule a re-check of the meter so you can confirm the leak has stopped.

For a residential building, shared risers, tanks and pumps are checked as one system.

Signs that call for underground tank leak detection

These are the signs most often linked to underground tank leak detection:

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

Causes we see in the field

• A common cause: a float valve that does not close, so water is wasted.
• A common cause: construction joints and corners.
• Cracks in the concrete tank walls or floor.

How we choose the tool in Al Msana

How the work is done, step by step

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.

Al Msana in facts and sources

Common questions about underground tank leak detection in Al Msana

What we advise against

• 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.