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

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

Before we start: what we know about Al Izdhar

The centre of Al Izdhar is at 24.7803, 46.7175, about 8.6 km from the centre of Riyadh, with an approximate radius of 1.2 km. The approximate area shown on the map is centred here. The centre of Al Izdhar sits about 646 m above sea level (SRTM open elevation data).

Main roads in or near Al Izdhar: Northern Ring Road, Eastern Ring Road, Muslima Al Ansari Road.

Al Izdhar sits at roughly 24.7803, 46.7175, about 8.6 km from the centre of Riyadh, and it covers an approximate radius of 1.2 km. That compact footprint matters for underground tank leak detection, because a survey team can usually reach every property in the district within a short, predictable route, which keeps site visits focused and the work tidy. Residents with tanks on compact plots benefit from scheduling that works around the tight streets of a neighbourhood of this size.

The centre of Al Izdhar sits about 646 m above sea level, according to SRTM open elevation data. Elevation does not change the physics of a leak, but it shapes how water tables, drainage and soil moisture behave across the area, and those factors influence how a technician reads the results of a pressure or vacuum test. Interpreting results with the local ground conditions in mind helps separate a genuine leak from seasonal moisture. Where a tank has an internal coating, the condition of that lining is also part of the picture, and the cost of recoating is quoted at SAR 25–65 per m², so a clear diagnosis before any repair decision saves owners from paying for work they do not need.

Owners in Al Izdhar often avoid the same errors. They wait for a visible puddle or a sudden drop in stock before calling anyone, when a slow loss may have been running for months. They also rely on a single reading instead of a repeat test, or they let a repair crew patch the surface without first confirming where the leak starts. Another frequent mistake is ignoring the tank's internal coating and treating a stained or flaking lining as cosmetic. Booking a full leak check at the first sign of a discrepancy, and asking for the results in writing, keeps decisions grounded in evidence rather than guesswork.

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

Signs worth paying attention to

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

Causes we see in the field

• A float valve that does not close, so water is wasted.
• A common cause: construction joints and corners.
• Cracks in the concrete tank walls or floor.

Tools and methods, and when we use them

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.

Quick comparison: facts and costs in Al Izdhar

Common questions about underground tank leak detection in Al Izdhar

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.