Underground tank leak detection for villas in Al Naym, Jeddah

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

Before we start: what we know about Al Naym

The centre of Al Naym is at 21.6277, 39.1437, about 9.9 km from the centre of Jeddah, with an approximate radius of 2.3 km. The approximate area shown on the map is centred here. The centre of Al Naym sits about 7 m above sea level (SRTM open elevation data).

Al Naym is about 4 km from the sea coast (OpenStreetMap). Main roads in or near Al Naym: Madinah Road, Prince Ahmed bin Abdulaziz Road, Madinah Road.

Underground water and fuel tanks in villas are most often troubled by slow leaks that go unnoticed for months. A gradual drop in stored water, a damp patch in the garden, or a sudden rise in pump running time are usually the first signs. In Al Naym, the centre sits about 7 m above sea level, which means the ground is low-lying and water tables can sit close to the surface during wet periods. Because the area is about 4 km from the sea coast, soil and groundwater can carry higher salt content than inland districts, and this speeds corrosion of concrete and metal tanks. Our detection work for villas here therefore starts with checking whether the leak is coming from the tank itself, its inlet and outlet pipes, or the surrounding soil.

The local facts shape the approach in several ways. The centre of Al Naym is at 21.6277, 39.1437, about 9.9 km from the centre of Jeddah, so response visits are planned around the district's position on the city's edge rather than its core. The approximate radius of 2.3 km means most villas in the district can be reached from one base route, which helps keep visits focused. Coastal proximity matters for coating decisions: where the internal surface is already worn, a new internal coating may be considered, and the cost for this is SAR 25–65 per m². The final figure depends on the tank's size and condition, and it is confirmed only after inspection. Because the ground is low, we also look closely at how rainwater drains around the tank and whether it pools near the access cover.

Before the visit, it helps to have a few details ready. Tell us the type of tank (concrete, steel, or fibreglass), what it holds, and roughly how old it is. Note when you first noticed the problem and whether it followed heavy rain. Let us know if any pipework or pump has been replaced recently. Ask whether the inspection includes a check of the coating condition and the likely coating area, so you know what the quote will cover. Clear answers to these questions let the technician arrive prepared, test the right points first, and give you a plain explanation of what was found before any work starts.

Villas often have several lines and tanks; we test them one at a time so the cause is clear.

When do you need underground tank leak detection?

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

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

Causes we see in the field

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

How we choose the tool in Al Naym

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 Al Naym

Short answers for Al Naym

Common mistakes we see

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

What you get after the work

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.