Underground tank leak detection in Al Hmra, Riyadh: without breaking

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

Why underground tank leak detection differs in Al Hmra

The centre of Al Hmra is at 24.7762, 46.7527, about 10.5 km from the centre of Riyadh, with an approximate radius of 1.2 km. The approximate area shown on the map is centred here. Main roads in or near Al Hmra: King Abdullah Road, Imam Abdullah bin Saud bin Abdulaziz Road, Imam Abdullah bin Saud bin Abdulaziz Road.

The centre of Al Hmra sits about 623 m above sea level (SRTM open elevation data).

Underground fuel and water tanks in Al Hmra, Riyadh, most often fail through slow leaks that go unnoticed for months. Corrosion at seams, fittings and the lower walls is the usual cause, and by the time stock levels or wet patches on the surface make the problem obvious, the tank may already have lost a significant volume. For a property with an older buried tank, this is the first thing to check, because small leaks rarely announce themselves and the damage tends to grow quietly beneath the ground.

Local conditions shape how the work is approached. The centre of Al Hmra sits at 24.7762, 46.7527, about 10.5 km from the centre of Riyadh, within an approximate radius of 1.2 km, so a visit is planned around the neighbourhood rather than the city as a whole. The centre of Al Hmra sits about 623 m above sea level (SRTM open elevation data), which is useful context when reviewing how the site drains and where surface water is likely to collect around a buried tank. Where a tank needs internal protection after repair, the internal coating is typically priced at SAR 25–65 per m², so the size of the tank’s internal surface area is the figure that will determine the cost of that stage.

Before the visit, ask the provider how they will test for leaks and whether the method will cover the full tank or only the visible sections. Ask what the report will show, including the condition of seams and fittings, and whether any recommended repair will be explained in writing before work begins. Confirm how the internal surface area will be measured, since that figure drives any coating quote at the stated rate. Finally, ask for a clear timeline and a record of what was found, so the tank’s condition can be compared at a later date.

The aim is to locate the cause with instruments first, so any opening is limited to one point.

Signs that call for underground tank leak detection

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

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

The most common causes

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

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.

Al Hmra in facts and sources

Common questions about underground tank leak detection in Al Hmra

Mistakes that cost more

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

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.