Underground tank leak detection for schools in Madinah

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

What is specific about Madinah for underground tank leak detection

Team note on Madinah: Kashf teams serve this city and its nearby districts with the same documented inspection standard: device-based leak detection without demolition, a written report, and a clear scope before any work begins.. The centre of Madinah sits about 589 m above sea level (SRTM open elevation data).

A school principal in Madinah is responsible for a campus that runs many hours a day, with students, staff and fuel or water stored underground for generators, boilers or irrigation. When a tank starts to leak, the signs are often subtle: a drop in stored volume that cannot be explained by use, a damp patch near the tank pit, or an unusual smell in the grounds. Because the tank is buried, these problems can grow for a long time before anyone sees them, and the school may only learn about them when a repair becomes urgent.

The local context matters here. The centre of Madinah sits about 589 m above sea level, according to SRTM open elevation data, so the city is a high-elevation area where the ground and the water table behave in their own way and should be considered when planning checks. For a school, this means that a leak detection routine should not be treated as a one-off job. Records of stock levels, dips and pit inspections should be kept so that a change is spotted early, and any finding should be compared against the tank's own history rather than general assumptions.

For a school owner, a practical sequence helps keep costs and disruption under control. First, collect the tank records, including installation dates, materials and any previous repairs, and check the daily stock reconciliation against deliveries and consumption. Second, inspect the tank pit and fill points for dampness, staining or odour, and note anything that changes between visits. Third, if a leak is suspected, arrange a formal test and ask for an itemised quote that shows the internal coating cost, which is typically SAR 25–60 per m², so the scope of any repair can be compared fairly. Fourth, plan any work outside teaching hours, secure the area, and record the outcome so the next inspection starts from a clear baseline.

For schools, the larger jobs are planned for weekends and holidays.

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

Causes we see in the field

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

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.

Quick comparison: facts and costs in Madinah

Common questions about underground tank leak detection in Madinah

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

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.