Underground tank leak detection for duplexes in Arqa, Riyadh

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

Underground tank leak detection in Arqa: the local context

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. 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). Main roads in or near Arqa: Western Ring Road, Prince Mishaal bin Abdulaziz Road, Prince Mishaal bin Abdulaziz.

How do you know if the underground water or fuel tank under your duplex is leaking? In Arqa, a neighbourhood about 9.9 km from the centre of Riyadh, the answer usually starts with a proper inspection rather than guesswork. The centre of Arqa sits at 24.6841, 46.5826, with an approximate radius of 3.8 km, and it lies about 686 m above sea level. Because the nearest wadi channel is about 2 km from the centre of Arqa, owners here should treat ground movement and water pooling around tank areas as worth checking rather than ignoring.

Our inspection for duplexes in Arqa follows a clear sequence. The technician first reviews the tank's age, location and the pipework connected to it, then checks the level and any recent drops in the water or fuel record. Next comes the detection step itself, where the tank and its lines are tested to find where any loss is occurring. If the tank walls are weakened, the report will also set out the cost of internal coating, which is SAR 25–70 per m², so you can compare repair options before any work starts. You receive a written summary of what was found, what it means and what you should do next, with no pressure to proceed on the same day.

To make the visit efficient, prepare a few things before the technician arrives. Gather any earlier maintenance records, installation papers and details of past repairs to the tank or its pipes. Note when you last noticed unusual water levels, wet patches near the tank area, or a change in pump activity. Clear access to the tank cover and the connecting valves, and make sure someone who knows the building's supply arrangements is available to answer questions. Having this information ready helps the inspection reach a clear answer for your duplex.

In a duplex, the two floors often share lines, so tests are done floor by floor.

Signs that call for underground tank leak detection

These are the signs most often linked to underground tank leak detection:

• 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

Where the problem usually comes from

• Construction joints and corners.
• Cracks in the concrete tank walls or floor.
• 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 Arqa

Short answers for Arqa

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

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.