Underground tank leak detection in Al Alya, Riyadh: cost & published offers

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

Why underground tank leak detection differs in 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 approximate area shown on the map is centred here. 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.

Underground tank leak detection in Al Alya usually starts with a simple question: is the tank losing fuel or water, or is the problem in the pipework around it? Many commercial sites in this district notice a drop in stock or a damp patch near the fill point before they know where the leak is. The most common cause we see is corrosion on the steel shell or at fittings, which allows product to seep out slowly and often goes unnoticed for months. A careful approach separates the tank from its lines and checks each one, so the work does not disturb the whole site unless it has to.

Al Alya is largely commercial, with shops and offices, so the approach has to fit around busy trading hours and tight access. A tank under a shop frontage or a shared service yard cannot always be opened or tested on a whim, so timing and access planning matter as much as the test itself. The centre of Al Alya sits at 24.6931, 46.6845, about 2.5 km from the centre of Riyadh, which places it well inside the city's commercial fabric and makes same-day site visits practical for most businesses. The district's elevation is about 622 m above sea level, a detail that does not change the test method but is useful context when a technician explains site conditions.

Before the visit, ask the provider whether they will isolate and test each tank and its lines separately, and whether they can work outside your opening hours. Ask how they will record the findings and whether you will receive a written report you can keep for your own records. If a repair is needed, ask for the cost of lining, and check that the rate is quoted per square metre of internal coating, as tank internal coating typically falls within SAR 25–65 per m², depending on the work involved. Clear answers on these points will make the visit faster and the outcome easier to act on.

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 underground tank leak detection

The following signs are worth checking before they grow:

• 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 — 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

The steps in order

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 Alya

Questions from Al Alya

Mistakes that cost more

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

The written outputs

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