Underground tank leak detection for residential buildings in Al Nwr, Riyadh

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

Before we start: what we know about Al Nwr

The centre of Al Nwr is at 24.6315, 46.8150, about 16.8 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 Nwr sits about 603 m above sea level (SRTM open elevation data).

Main roads in or near Al Nwr: Southern Ring Road, Eastern Ring Road, Kharj Expressway.

Underground water tanks in residential buildings most often fail quietly. A slow seep through a cracked wall, a worn joint, or a failing inlet valve can drain water for weeks before anyone sees damp patches or notices a drop in pressure. In Al Nwr, the first step is usually a visual and pressure-based check of the tank walls, floor, and fittings, followed by a targeted search for the source rather than a blanket repair.

Al Nwr is a neighbourhood whose centre lies at 24.6315, 46.8150, about 16.8 km from the centre of Riyadh, with an approximate radius of 1.2 km. That position matters because it shapes how a visit is planned: crews working here should expect a residential area with compact plots, where access to a buried tank may be shared with neighbouring walls, parking, or service lanes. The centre of Al Nwr sits about 603 m above sea level, according to SRTM open elevation data, so the team should note how gravity feed and pump pressure behave in the building's supply line when judging whether a drop in pressure points to a leak or to normal system behaviour. Local conditions like these help decide whether the inspection starts at the tank itself or at the distribution pipework.

Before the visit, ask for a clear scope in writing. Confirm whether the quote covers only detection or also repairs, and whether a tank internal coating is part of the plan. If coating is considered, the typical range is SAR 25–70 per m², so ask how the surface area was measured and what the final figure will be based on. Ask how long the tank has been in service, when it was last cleaned, and whether anyone has recorded water-level changes. Request that the technician explain each test before starting, and that the findings be shown to you with photographs or notes. A good provider in Al Nwr will be happy to answer these questions plainly before any work begins.

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

When do you need underground tank leak detection?

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

• 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

Where the problem usually comes from

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

Tools we use in Al Nwr

How the work is done, step by step

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 — Al Nwr

Short answers for Al Nwr

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.