Underground tank leak detection for duplexes in Al Taawn, Riyadh

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

Underground tank leak detection in Al Taawn: the local context

The centre of Al Taawn is at 24.7731, 46.6995, about 7 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 Taawn sits about 666 m above sea level (SRTM open elevation data).

Main roads in or near Al Taawn: Northern Ring Road, Uthman ibn Affan Road, Abu Bakr Al-Siddiq Road.

Underground tank leak detection for duplexes in Al Taawn, Riyadh usually starts with a simple concern: the water level drops faster than household use would explain, or the pump runs more often than it should. For duplex homes, which often share one tank or split a tank between two households, a small leak can go unnoticed for a long time because each household assumes the other is using more water. The most common problem is therefore a slow loss through a cracked wall, a failed joint or a corroded inlet that is hidden below ground, rather than a dramatic burst. Our approach begins by confirming whether the loss is real and where it is most likely to be, before any digging or repair work is suggested.

The location shapes how we approach each visit. The centre of Al Taawn is at 24.7731, 46.6995, about 7 km from the centre of Riyadh, with an approximate radius of 1.2 km, so most duplexes here sit within a compact, built-up area where tanks are often placed close to walls, driveways and shared service lines. The centre of Al Taawn sits about 666 m above sea level (SRTM open elevation data), which means the local ground and water pressure conditions should be considered when interpreting pump behaviour and levels. Because the area is compact, we plan the route and equipment before arriving, and we check how the tank connects to both units of the duplex so that the test covers the full system rather than one side only.

Before the visit, it helps to ask a few clear questions. Ask whether the tank is shared or separate for each unit, and which household is responsible for the cost of any repair. Ask whether the tank has been opened or repaired before, and when. Ask for the approximate tank size and whether it is concrete or another material, since this affects the repair method. If a lining repair is considered, ask for the tank internal coating price range, which is SAR 25–70 per m², and confirm how the final area will be measured and charged. Finally, ask what the visit will include and whether a written summary of the findings will be provided.

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

Signs that call for underground tank leak detection

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
• The pump runs for longer periods

The most common causes

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

Tools we use in Al Taawn

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.

Quick comparison: facts and costs in Al Taawn

Short answers for Al Taawn

Mistakes that cost more

• 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.