Underground tank leak detection in Jubail: before buying or handover

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

Why underground tank leak detection differs in Jubail

Team note on Jubail: 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.. Jubail is about 0.9 km from the sea coast (OpenStreetMap).

The centre of Jubail sits about 4 m above sea level (SRTM open elevation data).

Picture a property owner in Jubail who has just taken over a house with an old underground fuel or water tank buried in the garden. Nothing looks wrong on the surface, but the tank is past its prime and no one has a record of when it was last inspected. Before buying, or soon after, the owner wants to know whether the tank is leaking and what it would cost to deal with the problem. Many people in this position discover the issue only after a strong smell or an unexplained drop in volume, which is why checking early matters.

The local setting raises the stakes. The centre of Jubail sits about 4 m above sea level, and the town lies roughly 0.9 km from the coast. That combination means the ground is low-lying and close to the sea, so groundwater can be shallow and moisture in the soil can be high. A leak from a buried tank can therefore spread more quickly through the surrounding soil and reach groundwater sooner than it might inland. For a buyer, this makes a tank that appears sound still worth testing, and it makes any sign of corrosion or seepage more serious than it would be elsewhere. Coating a tank interior is also a real cost to plan for, with work typically quoted at SAR 25–60 per m², so the size of the tank will drive the budget.

A sensible sequence starts with paperwork. Ask the seller for any inspection, repair or installation records and note the tank's age and material. Next, arrange a professional leak test on the tank and its pipework before you sign, and make the purchase conditional on the result if possible. If the test shows a problem, get a written estimate for repair, relining or removal, using the per-square-metre coating range to check that quotes are reasonable for the tank's surface area. Finally, once any work is finished, keep the test certificate and schedule periodic re-checks so that the next owner inherits a clear record.

Before buying or taking over a property, an inspection gives you findings in writing before you sign.

When do you need underground tank leak detection?

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

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

Where the problem usually comes from

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

How we choose the tool in Jubail

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 — Jubail

Short answers for Jubail

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 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.