Underground tank leak detection for residential buildings in Am Al Hmam Al Ghrby, Riyadh

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

Before we start: what we know about Am Al Hmam Al Ghrby

The centre of Am Al Hmam Al Ghrby is at 24.6895, 46.6434, about 4.2 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. The nearest wadi channel is about 1.5 km from the centre of Am Al Hmam Al Ghrby (OpenStreetMap).

The centre of Am Al Hmam Al Ghrby sits about 633 m above sea level (SRTM open elevation data). Main roads in or near Am Al Hmam Al Ghrby: King Khalid Road, Al Urubah Road, Umm Al Hamam Street.

Picture a homeowner in a residential building who notices that the monthly water bill has crept up, or that the ground near the building's service area feels damp even though it has not rained. Underground water tanks are easy to forget because they sit out of sight, yet a slow leak can run for a long time before anyone sees a sign of it. For owners and tenants alike, the first question is simply whether the tank is still holding water as it should.

The local facts give some useful context. Am Al Hmam Al Ghrby is centred at 24.6895, 46.6434, about 4.2 km from the centre of Riyadh, with an approximate radius of 1.2 km, so it sits close enough to the city that many buildings share similar infrastructure and maintenance histories. The centre of the area sits about 633 m above sea level, which means the ground levels and drainage paths across the neighbourhood are shaped by its elevation. The nearest wadi channel is about 1.5 km from the centre, so water moving across the land after heavy flows can reach the area and affect the ground around buried tanks. Each of these facts points to the same practical lesson: a tank here should be checked regularly, not only when a problem appears. Tank internal coating is priced at SAR 25–70 per m², so the cost of repairing the inside surface depends largely on the size of the tank.

A sensible approach begins with a visual and records check. Look at the water meter readings over several weeks and note any unexplained rise in usage. Walk around the area above the tank and look for soft ground, wet patches, or unusual growth of green vegetation. Next, arrange a professional inspection of the tank's walls, floor and inlet and outlet pipes, and ask for the findings in writing. If a leak is confirmed, get a measured estimate for internal coating based on the tank's surface area, then schedule the work before the damage spreads. Finally, set a recurring inspection reminder so the tank is checked on a fixed schedule, and keep the records together so future owners and managers can see the building's history.

For a residential building, shared risers, tanks and pumps are checked as one system.

Signs that call for underground tank leak detection

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

• 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

• A common cause: 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 we use in Am Al Hmam Al Ghrby

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 Am Al Hmam Al Ghrby

Questions from Am Al Hmam Al Ghrby

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.