Underground tank leak detection for offices & commercial complexes in Khafji

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

Before we start: what we know about Khafji

The centre of Khafji sits about 9 m above sea level (SRTM open elevation data). Khafji is about 2 km from the sea coast (OpenStreetMap).

Team note on Khafji: 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.. Main roads in or near Khafji: King Abdullah Road.

Underground fuel and water tanks at offices and commercial sites most often fail through slow leaks that go unnoticed, especially at fittings, pipe joints and the tank walls where corrosion has started. Stock levels that drift without explanation, a rise in water in the tank, or a damp patch near the access cover are often the first signs. For a commercial building, a small leak can quietly become a costly problem for the business and a risk to the ground beneath it, so early checking matters more than it might seem from the surface.

Local conditions in Khafji change how we approach each job. The centre of Khafji sits about 9 m above sea level, so groundwater and drainage behave differently from what you would find on higher inland ground, and we take that into account when judging whether water in or around a tank may be coming from outside. Khafji is also about 2 km from the sea coast, which means salt-laden air and a moist environment can speed up corrosion on exposed metal and fittings. Where the tank has an internal coating, the condition of that coating is a practical part of the inspection. Coating work in this area is typically priced at SAR 25–60 per m², and the figure depends on the surface area that needs treating and the state of the tank, so a proper assessment comes before any quote.

Before the visit, it helps to have a few details ready. Tell us the age of the tank, what it holds, whether it has been opened or repaired before, and any changes in stock readings or unexplained water. Mention where the tank sits relative to the building, whether there are nearby pipes or drains, and whether you have records of past inspections. Ask how the testing will be carried out, what the report will cover, and whether any repair recommendations will be explained in plain terms before work starts. Clear answers to these questions let the visit focus on the tank itself and give you a result you can act on.

For offices and commercial complexes, work is scheduled to avoid disrupting staff and visitors.

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

• A common cause: construction joints and corners.
• A common cause: cracks in the concrete tank walls or floor.
• 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.

Quick comparison: facts and costs in Khafji

Short answers for Khafji

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 receive

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