Underground tank leak detection for duplexes in Al Snaaya, Riyadh

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

Underground tank leak detection in Al Snaaya: the local context

The centre of Al Snaaya is at 24.6419, 46.7492, about 10.9 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 Snaaya: Madinah Road, Ali bin Abi Talib Street, Al Halah.

The centre of Al Snaaya sits about 593 m above sea level (SRTM open elevation data).

Is there a way to tell whether the underground tank beneath your duplex in Al Snaaya is losing water before the damage shows up in your walls or your bills? For owners here, that question comes up often, especially with older tanks that have been in the ground for years. Al Snaaya is centred at 24.6419, 46.7492, about 10.9 km from the centre of Riyadh, with an approximate radius of 1.2 km, and its centre sits roughly 593 m above sea level. Those figures place the neighbourhood on a slightly elevated part of the city, and our leak checks are planned around the layout of duplex plots in this area rather than a generic approach. Tank internal coating, where it is needed, is priced at SAR 25–70 per m², so the size of the tank will shape the cost once a leak has been confirmed.

Our inspection for an underground tank in a duplex begins with a visual review of the tank access points and the pipework connected to it, followed by a check of the water level over a set period to see whether the readings drop without explanation. Where the readings point to a leak, the technician then looks at the tank walls and joints for signs of seepage or corrosion and notes which areas need closer attention. The findings are explained to the owner in plain terms, with the affected section identified so that repair decisions are based on what was actually found. If coating is the recommended step, the work is quoted by the square metre using the SAR 25–70 per m² range, after the surface area has been measured on site.

Before the visit, it helps to gather a few details that make the inspection faster and more accurate. Note when you first noticed unexplained water use or damp patches, and keep any recent water bills so the usage pattern can be compared. Clear a path to the tank access cover and the nearby pump or valve area, and tell us if the duplex shares its tank with a neighbouring unit, since that affects how the test is arranged. If you have any old installation records or details of previous repairs, have them ready, as they help the technician understand the tank's history. With these details in hand, your visit in Al Snaaya can focus on the tank itself.

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

When do you need underground tank leak detection?

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

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

The most common causes

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

Tools and methods, and when we use them

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.

Facts and costs — Al Snaaya

Common questions about underground tank leak detection in Al Snaaya

Common mistakes we see

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

What you receive

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