Underground tank leak detection for residential buildings in Jubail

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

Why underground tank leak detection differs in Jubail

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).

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..

Underground tank leak detection in Jubail starts with the location itself. The centre of Jubail sits about 4 m above sea level, and the town is about 0.9 km from the sea coast. Because the ground is so low and so close to the water, technicians first look at how groundwater and saline moisture may be moving around the tank. A tank that sits near the coast can be affected by water tables that rise and fall, so the first checks focus on whether water is entering the tank area and whether the surrounding soil shows signs of wetness or salt staining.

Some things can only be settled during the site visit. The technician will need to see the tank, its fittings, the pipe runs and the fill and vent points with their own eyes, and will decide which test suits the tank's material and age. Access to the tank, the condition of the cover and whether the tank is still in use are all judged on arrival. If the tank shows damage, the technician will record it and explain the options, including whether an internal coating may be needed. Coating costs are typically SAR 25–60 per m², but the final figure depends on the tank's size and condition, so no firm quote is given until the visit is complete.

To help the technician arrive prepared, please gather a few details beforehand. Note when you first noticed a drop in fuel or water levels, any unusual smells near the tank, and whether the ground above it has ever been wet or sunken. Have the tank's age, its material and any past repair records ready if you can find them. Clear the area around the access cover, and tell us if the tank sits near a building wall, a garden or a parking space. This information lets the technician plan the right checks, work efficiently and give you a clear picture of what the tank needs.

For a residential building, shared risers, tanks and pumps are checked as one system.

Signs that call for underground tank leak detection

If you notice one of these signs in Jubail, 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

Causes we see in the field

• Cracks in the concrete tank walls or floor — we check this before anything else.
• A common cause: construction joints and corners.
• A common cause: 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.

Quick comparison: facts and costs in Jubail

Questions from Jubail

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.