Underground tank leak detection in Al Shmysy, Riyadh: cost & published offers

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

Before we start: what we know about Al Shmysy

The centre of Al Shmysy is at 24.6238, 46.7000, about 10.3 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. The nearest wadi channel is about 1.4 km from the centre of Al Shmysy (OpenStreetMap).

The centre of Al Shmysy sits about 587 m above sea level (SRTM open elevation data). Main roads in or near Al Shmysy: King Fahd Road, Asir, Madinah Road.

Al Shmysy sits at 24.6238, 46.7000, roughly 10.3 km from the centre of Riyadh, and its built-up area covers an approximate radius of 1.2 km. That distance matters for underground tank work. A site this far from the city core is often served by crews travelling in from central Riyadh, so a leak detection visit is best planned around a fixed time window, with access arranged in advance for the tank location and any gate or compound entry.

The centre of Al Shmysy is about 587 m above sea level, according to SRTM open elevation data. Elevation shapes how the ground drains and how water moves beneath the surface, which can affect how a leak appears in the readings. Technicians therefore compare results against the local ground conditions rather than assuming a standard profile. The nearest wadi channel lies about 1.4 km from the centre, based on OpenStreetMap. Seasonal runoff in wadi systems can saturate soil, so owners should note recent heavy rain when booking, since wet ground can mask or mimic small losses.

Where a tank needs repair, the internal coating is priced at SAR 25–65 per m². Owners in Al Shmysy often ask about this figure before a survey, so the detection report should state the tank's measured surface area, which is what sets the coating estimate. A common mistake is to request coating work before confirming the leak's source, which can waste budget on the wrong section. Another is to ignore small, slow drops in stock levels, which are early signs of a leak. Owners also avoid delaying the survey after a suspected loss, skipping written records of tank dimensions, and choosing work on price alone without checking what the quote covers.

Prices shown on this page come from our own published price list for the city; the final price is set after inspection.

When do you need 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

The most common causes

• Cracks in the concrete tank walls or floor — we check this before anything else.
• Construction joints and corners — 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 Shmysy

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 Shmysy

Questions from Al Shmysy

What we advise against

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

The written outputs

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.