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

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

Before we start: what we know about Al Mlz

The centre of Al Mlz is at 24.6561, 46.7275, about 8.3 km from the centre of Riyadh, with an approximate radius of 2.8 km. The service-area circle on the map below is drawn from this point. Al Mlz is mainly apartment buildings.

The centre of Al Mlz sits about 592 m above sea level (SRTM open elevation data). Main roads in or near Al Mlz: University Street, Salah al-Din al-Ayyubi Road, Omar bin al-Khattab Road.

Underground tank leak checks in Al Mlz, Riyadh, start with the place itself. The centre of Al Mlz sits at 24.6561, 46.7275, about 8.3 km from the centre of Riyadh, with an approximate radius of 2.8 km. Because the neighbourhood is mainly apartment buildings, a tank is often shared by several households or sits close to residential walls, shafts and utility lines, so the technician first confirms the tank's location, access points and the buildings nearby before any equipment is set up. The site also sits at about 592 m above sea level, a fact the technician notes when reviewing elevation-based records and when planning how fluid levels and pressures are read on the day.

Other points are left to the site visit itself. The technician will check the tank's condition, its fill and vent lines, the dispensing pipework and the condition of any internal lining, and will decide on the test method once the tank can be seen and measured. Where internal coating is found to be damaged, the cost is judged on the actual area, with the figure of SAR 25–65 per m² used as a guide for the coating work only. Access, ground conditions and the state of nearby pipes cannot be known from a desk review, so these are assessed in person and any recommendation follows from what is found.

To help the technician, have ready the tank's installation date, any previous leak reports or repair records, the fuel or liquid stored, and the building's access arrangements, including who holds keys to the plant area. Say whether the tank serves one household or a shared building, and note any recent change in fluid use, such as a drop in stock levels that does not match usage. Clear answers to these questions let the technician plan the visit around the apartment building's routine, reduce disruption to residents, and arrive with the right tools for the tank in Al Mlz.

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

Signs worth paying attention to

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

• 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

• A common cause: construction joints and corners.
• 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.

How we choose the tool in Al Mlz

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 Mlz

Short answers for Al Mlz

What we advise against

• 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.