Underground tank leak detection in Abha: when to call a technician

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

Why underground tank leak detection differs in Abha

Team note on Abha: Kashf teams serve this city and its nearby districts with the same documented inspection standard: device-based leak detection without demolition, a written report, and a clear scope before any work begins.. The centre of Abha sits about 2230 m above sea level (SRTM open elevation data).

Underground fuel and water tanks in Abha most often run into trouble at the seams and fittings rather than through the body of the tank. Residents usually notice a drop in stored volume that no one can explain, a damp patch near the access cover, or a smell of fuel around the pump house. These are the moments to call a technician, not after the problem has spread to the ground around the tank. A prompt inspection can tell whether the loss is coming from a fitting, a corroded section, or the coating itself. Where the inner coating is failing, repair is often weighed against replacement, and the cost of recoating tank interiors in this area is typically SAR 25–55 per m², so the size of the tank drives the budget.

Abha is not a typical low-lying Saudi town. The centre of Abha sits about 2230 m above sea level, which means cooler nights and larger day-to-night temperature swings than most visitors expect. Those swings cause the ground and the tank to expand and contract, which puts stress on joints and connections over time. A technician working here should expect that seasonal movement to be part of the diagnosis, and should check fittings for signs of fatigue as well as for active leaks. Testing done in the warm part of the day may miss a leak that shows only once the ground has cooled, so ask when the test will be carried out and whether it will be repeated.

Before the visit, ask the technician how they will detect the leak, whether they will test the tank as well as the pipework, and what they will do if they find damage that needs more than a quick repair. Ask for the scope of the work in writing, including the area to be coated if recoating is proposed, and the price per square metre. Confirm who will handle any safety isolation of the tank and how the surrounding ground will be checked for contamination. Keep a record of the tank's age, its capacity and any previous repairs, because this helps the technician work out whether the problem is new or part of a pattern.

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

When do you need underground tank leak detection?

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

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

The most common causes

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

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.

Abha in facts and sources

Questions from Abha

Common mistakes we see

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

What you receive

The written output: the written level-test result and the recommended next step. The report is numbered and can be checked with its verification code.