Underground tank leak detection for residential buildings in Al Jzyra, Riyadh

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

Underground tank leak detection in Al Jzyra: the local context

The centre of Al Jzyra is at 24.6655, 46.7949, about 13.2 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 Jzyra: Eastern Ring Road, Abu Ubaidah Amir ibn al-Jarrah Road, Umar ibn al-Khattab Road.

The centre of Al Jzyra sits about 620 m above sea level (SRTM open elevation data).

Al Jzyra sits with its centre at 24.6655, 46.7949, about 13.2 km from the centre of Riyadh, and it covers an approximate radius of 1.2 km. That compact footprint matters for underground tank work. Crews can reach most residential blocks from a single base, so leak checks can be scheduled in clusters rather than spread across the city, which keeps access routes short and makes it easier to test several tanks in one visit.

The centre of Al Jzyra sits about 620 m above sea level, according to SRTM open elevation data. For tank owners, elevation influences how water pressure and groundwater behave around buried structures. Technicians will look closely at the lower points of a site, where seepage tends to collect, and will check how inlet and outlet pipes sit relative to the tank base. Because the terrain is measured and documented, the inspection plan can be set against a known reference rather than guesswork.

Internal coating is a real cost consideration here. Tank internal coating is priced at SAR 25–70 per m², so the surface area of a tank drives the budget more than almost anything else. Owners who know the tank dimensions before calling can receive a far more accurate estimate, and a leak test often reveals whether recoating is needed at all. Common mistakes owners avoid include waiting for a visible puddle before checking, which usually means a leak has been running for some time; ordering a full recoat without first confirming where the water is escaping; assuming a tank is sound because the water level seems steady; and choosing a contractor who cannot describe how the site's position and tank size will affect the work.

For a whole building, a survey of the shared systems comes before unit-by-unit work.

Signs that call for underground tank leak detection

These are the signs most often linked to underground tank leak detection:

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

Where the problem usually comes from

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

Tools we use in Al Jzyra

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.

Al Jzyra in facts and sources

Questions from Al Jzyra

Common mistakes we see

• 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.