Underground tank leak detection for duplexes in Al Mnar, Riyadh

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

What is specific about Al Mnar for underground tank leak detection

The centre of Al Mnar is at 24.7251, 46.7976, about 12.4 km from the centre of Riyadh, with an approximate radius of 1.2 km. The approximate area shown on the map is centred here. Main roads in or near Al Mnar: Kharais Road, Kharais Sub Road, Imam Ahmad bin Hanbal Street.

The centre of Al Mnar sits about 602 m above sea level (SRTM open elevation data).

Do you have a way to tell whether the underground tank beneath your duplex in Al Mnar is leaking? Al Mnar's centre sits at 24.7251, 46.7976, about 12.4 km from the centre of Riyadh, and the neighbourhood spans an approximate radius of 1.2 km. The centre of Al Mnar is about 602 m above sea level, according to SRTM open elevation data. Because the area is a compact residential zone a short drive from the city centre, owners of duplexes here often ask whether a visit is worth arranging before a problem surfaces above ground. The honest answer is that a tank leak is hard to spot by eye, and a structured inspection is the reliable way to find out.

Our inspection for underground tanks serving duplexes in Al Mnar starts with a review of the tank's age, its material and the history of any repairs or refills. The technician then checks the tank's internal condition, including the coating, which is often the first place wear shows. Where the coating is failing, the cost of recoating is quoted per square metre, typically SAR 25–70 per m², so the scope of work depends on the measured surface area rather than a flat fee. The team records what they find, explains which findings need action now and which can be monitored, and gives you a written summary you can keep with your property papers.

Before the visit, gather what will make the inspection faster and more accurate. Note the duplex's address in Al Mnar and any landmarks that help the technician find the tank access point, and confirm where the tank sits relative to the building. Collect any previous maintenance records, invoices for water or fuel top-ups, and details of when the tank was last cleaned or recoated. Clear access to the tank cover and the surrounding area, and tell the household when the visit is scheduled so that water use can be kept steady during testing. With this ready, the visit can focus on the tank itself.

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:

• Damp or salt marks on the tiles above the tank
• The tank needs refilling faster than usual
• The pump runs for longer periods
• A noticeable drop in the water level overnight

Where the problem usually comes from

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

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 Al Mnar

Common questions about underground tank leak detection in Al Mnar

Mistakes that cost more

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

The written outputs

You receive: the written level-test result and the recommended next step, in a technical report with a verification code.