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

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

Before we start: what we know about Al Wsham

The centre of Al Wsham is at 24.6415, 46.6980, about 8.3 km from the centre of Riyadh, with an approximate radius of 1.2 km. The service-area circle on the map below is drawn from this point. The centre of Al Wsham sits about 600 m above sea level (SRTM open elevation data).

Main roads in or near Al Wsham: King Fahd Road, King Fahd Sub Road, Prince Saud bin Faisal bin Abdulaziz Road.

Picture a homeowner in Al Wsham who notices that the water bill has crept up for no clear reason, or that a damp patch keeps appearing near the garden wall. Somewhere beneath the surface, an underground tank may be losing water, and the owner has no easy way to see it. Many people in this situation delay acting, hoping the problem will resolve itself, and by the time the leak is confirmed the cost of repair has grown.

Al Wsham sits at the coordinates 24.6415, 46.6980, roughly 8.3 km from the centre of Riyadh, and its built-up area spans an approximate radius of 1.2 km. That distance means residents here are close enough to the city to rely on its service networks, yet far enough out that a tank problem can go unnoticed for longer. The centre of the district lies at about 600 metres above sea level, a fact worth keeping in mind when planning how a tank is accessed and tested. For an owner, these facts suggest that a leak test should be arranged promptly rather than left until the damage becomes obvious.

If you suspect a leak, start by recording your water meter reading at the same time on several consecutive days while no water is being used, so you have a clear pattern to share. Next, check the tank's access points and the pipework above it for wet ground, staining, or unusual soft spots. Then arrange a formal leak detection inspection and ask for the findings in writing. If the tank shows internal damage, ask for a quotation based on the surface area to be treated: internal coating is typically priced at SAR 25–65 per m², so request the measured area so you can compare offers on the same basis. Finally, agree a repair schedule before work begins and confirm how the tank will be tested again once the repair is complete.

Prices shown on this page come from our own published price list for the city; the final price is set after inspection.

Signs worth paying attention to

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

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

Causes we see in the field

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

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 Al Wsham

Common questions about underground tank leak detection in Al Wsham

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.