Underground tank leak detection in Al Fyslya, Riyadh: without breaking

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

Why underground tank leak detection differs in Al Fyslya

The centre of Al Fyslya is at 24.6325, 46.7725, about 13.3 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. Main roads in or near Al Fyslya: Southern Ring Road, Ali bin Abi Talib Road, Prince Mohammed bin Abdulrahman Road.

The centre of Al Fyslya sits about 601 m above sea level (SRTM open elevation data).

Imagine a homeowner in Al Fyslya who has noticed that the water bill has crept up for no clear reason, or that the water level in a below-ground storage tank seems to drop faster than household use would explain. The property may be a villa, a small compound or a mixed-use building, and the tank may have been in the ground for years without anyone looking at it. Many owners only think about the tank when water runs low or a pump starts working harder than usual, by which point a slow leak may already have soaked into the surrounding soil.

Al Fyslya sits at about 24.6325 north and 46.7725 east, roughly 13.3 km from the centre of Riyadh, and the core of the district covers an approximate radius of 1.2 km. Its centre lies around 601 m above sea level. For an owner, this means the neighbourhood is a comfortable distance from the city centre yet still within the same urban area, so local water supply patterns and ground conditions are broadly similar across the district. A leak that goes unnoticed in one property can affect neighbouring plots through the soil, so it is sensible to test the tank rather than assume it is sound. Anyone planning a repair or recoating should also know that internal tank coating is priced at SAR 25–65 per m², so the size of the tank will shape the cost of any work.

If you suspect a leak, start by recording the water level and your meter reading on the same day for several days while no water is being used, which shows whether the loss is real. Next, check the pipework, valves and connections around the tank for damp patches or staining. Then arrange a proper inspection to confirm where the leak is and how far the coating has worn. Once the source is found, obtain a written quote that lists the surface area to be coated, so you can compare it against the SAR 25–65 per m² rate. Finally, after any repair, keep a simple log of readings for the next few weeks to confirm the leak has truly stopped.

The aim is to locate the cause with instruments first, so any opening is limited to one point.

Signs that call for underground tank leak detection

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

• Damp or salt marks on the tiles above the tank
• The tank needs refilling faster than usual
• The pump runs for longer periods

Causes we see in the field

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

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.

Al Fyslya in facts and sources

Common questions about underground tank leak detection in Al Fyslya

What we advise against

• Ignoring the float valve
• Waterproofing the tank before confirming the loss is from the tank and not the line

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.