Underground tank leak detection in Arqa, Riyadh: emergency

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

Before we start: what we know about Arqa

The centre of Arqa is at 24.6841, 46.5826, about 9.9 km from the centre of Riyadh, with an approximate radius of 3.8 km. The service-area circle on the map below is drawn from this point. Main roads in or near Arqa: Western Ring Road, Prince Mishaal bin Abdulaziz Road, Prince Mishaal bin Abdulaziz.

The centre of Arqa sits about 686 m above sea level (SRTM open elevation data). The nearest wadi channel is about 2 km from the centre of Arqa (OpenStreetMap).

Underground fuel and water tanks in Arqa most often fail quietly. A slow seep at a fitting, a cracked joint in the concrete surround, or corrosion on the tank wall can go unnoticed for weeks, and the first sign is often a drop in stock or a damp patch in the yard. For emergencies, the priority is to stop the source, protect nearby ground, and confirm whether liquid is actually escaping before any repair is scoped.

Arqa is located at 24.6841, 46.5826, about 9.9 km from the centre of Riyadh, with an approximate radius of 3.8 km, so most properties here are on the fringe of the city and are often served by teams travelling in from the central districts. The centre of Arqa sits about 686 m above sea level, which matters less for leak detection itself than for how water and fuel move through the ground, and the nearest wadi channel is about 2 km from the centre of Arqa. A wadi nearby means that during or after rain, seepage from a leaking tank can be carried away from the site, so surface signs may be misleading. Technicians working here should check for staining and odour across a wider area, not only directly over the tank, and should not assume that a dry surface means a sound tank. Where repair is needed, the internal coating of the tank is priced at SAR 25–70 per m², so the extent of the affected wall area will shape the final cost.

Before the visit, ask the service provider which leak-testing method they will use and whether it can be carried out with the tank still in service or whether the tank must be emptied. Confirm whether they will check the fittings, pipework and surrounding concrete as well as the tank body, and ask how they will record the findings so you can share them with your insurer or landlord. Ask for their expected arrival time in Arqa, since traffic from central Riyadh can affect it, and tell them the location of the tank and any access restrictions on the property. Finally, ask what they will do if the leak is confirmed, and whether they can isolate the tank safely on the same visit to limit further loss.

If water is flowing, close the main valve first, then call or message with photos.

Signs that call for underground tank leak detection

The following signs are worth checking before they grow:

• 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.
• Construction joints and corners.
• A common cause: cracks in the concrete tank walls or floor.

Tools we use in Arqa

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 Arqa

Common questions about underground tank leak detection in Arqa

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.