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

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

Why underground tank leak detection differs in Al Nrjs

The centre of Al Nrjs is at 24.8341, 46.6802, about 13.4 km from the centre of Riyadh, with an approximate radius of 8 km. The service-area circle on the map below is drawn from this point. Main roads in or near Al Nrjs: King Salman Road, Anas bin Malik Street, Prince Faisal bin Bandar bin Abdulaziz Road.

The nearest wadi channel is about 0.7 km from the centre of Al Nrjs (OpenStreetMap). Al Nrjs is mainly villas.

The centre of Al Nrjs sits about 648 m above sea level (SRTM open elevation data).

Al Nrjs is a residential district in the north of Riyadh, centred at 24.8341, 46.6802, about 13.4 km from the centre of Riyadh, with an approximate radius of 8 km. Its character is mainly villas, which means most properties keep their own underground tanks for water and fuel rather than relying on a shared network. Because each villa may hold a separate tank, a leak detection visit usually covers one property at a time, and the survey is planned around the layout of that plot, the access points and the location of the tank relative to the house and garden.

The area sits at about 648 m above sea level, and the nearest wadi channel lies roughly 0.7 km from the centre. Elevation and nearby drainage matter in practice: ground in higher, open areas can drain quickly after rain, while low spots and soil near a channel can hold moisture for longer. Technicians therefore look at how water moves across the site and check whether ground moisture, rather than a true tank leak, could be affecting readings. Keeping this in mind helps separate a genuine loss from a seasonal change in the surrounding soil.

Owners in Al Nrjs often make a few avoidable mistakes. They wait for a visible wet patch before calling anyone, when a steady drop in tank levels is usually the earlier sign. They assume a new tank cannot leak, or they ignore a leak test after repairs. Some also plan a coating or lining job without first measuring the tank area, which matters because internal coating is priced per square metre, at SAR 25–65 per m². Checking the surface area and confirming the cause of a loss before any work begins keeps the project focused and avoids paying for repairs that do not address the real problem.

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 Nrjs, 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

Where the problem usually comes from

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

Tools we use in Al Nrjs

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.

Facts and costs — Al Nrjs

Short answers for Al Nrjs

Common mistakes we see

• 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.