Underground tank leak detection in Al Aryja, Riyadh: before summer & rain season

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

Before we start: what we know about Al Aryja

The centre of Al Aryja is at 24.6257, 46.6566, about 10 km from the centre of Riyadh, with an approximate radius of 2 km. The service-area circle on the map below is drawn from this point. The centre of Al Aryja sits about 629 m above sea level (SRTM open elevation data).

The nearest wadi channel is about 0.3 km from the centre of Al Aryja (OpenStreetMap). Main roads in or near Al Aryja: Yazid bin Abi Sufyan Road, Imam Abu Hanifa Road, Prince Fahd bin Faisal bin Farhan Al Saud Road.

Al Aryja sits at 24.6257, 46.6566, roughly 10 km from the centre of Riyadh, and its built-up area spreads across an approximate radius of 2 km. For a home or building owner, that distance matters: the area is close enough to the city for a service visit to be arranged quickly, yet the land feels more open than the dense core. Crews should plan routes and arrival times with that spread in mind, and owners should give clear access directions for tanks set back from the main roads.

The centre of Al Aryja is about 629 m above sea level, according to SRTM open elevation data. Height above sea level does not change how a leak is tested, but it does shape how water pressure behaves in the supply lines and how tanks are filled. A crew reviewing an older system will look at pressure readings alongside the tank's position, so owners should note any pump or booster arrangements when they book. The nearest wadi channel is about 0.3 km from the centre of Al Aryja, mapped by OpenStreetMap. Channels like this carry water after rain and can affect the ground around buried tanks, so the inspection should check for soil movement, wet patches and erosion near the tank walls, not only the tank itself.

Owners in this area often delay the work, and several mistakes are easy to avoid. One is waiting for a visible puddle or smell before calling for a check, when small losses can be found only through pressure testing. Another is assuming the tank lining is sound because the water tastes normal, even though the internal coating can wear through unseen. Costs for re-coating are quoted at SAR 25–65 per m², so an accurate measurement of the tank's inner surface helps avoid surprises when the report is reviewed. Finally, many owners skip recording the tank's age and past repairs, which makes it harder to judge whether a leak is new or long-standing. Keeping those records ready before the visit makes the result far more useful.

Checks before summer and before the rain season catch problems while they are still small.

Signs worth paying attention to

The following signs are worth checking before they grow:

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

Tools and methods, and when we use them

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 Aryja

Questions from Al Aryja

Common mistakes we see

• 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.