Underground tank leak detection for duplexes in Aldarb

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

Why underground tank leak detection differs in Aldarb

The centre of Aldarb sits about 79 m above sea level (SRTM open elevation data). Aldarb is about 18.7 km from the sea coast (OpenStreetMap).

Does a leaking underground tank matter if the duplex looks fine above ground? In Aldarb it can, because the signs of a leak are often hidden. Aldarb's centre sits about 79 m above sea level, and it is about 18.7 km from the sea coast. Those facts describe where the town stands, but they also explain why owners should not assume a buried tank is safe simply because the surface looks dry and normal. A tank that is out of sight can lose contents for a long time before anyone notices a problem, so a planned check is the sensible way to be sure.

The inspection follows a clear order. The technician first reviews the tank's age, its material and any past repairs, then checks the pipework and fittings that connect the tank to the duplex. Next comes the internal review of the tank itself, where the condition of the inner surface is assessed. Where coating work is needed, the cost is quoted at SAR 25–60 per m², so the size of the tank's internal surface sets the range of the estimate. The technician then records the findings in a written report that the owner can keep for future reference and share with any tenant or buyer who asks about the tank's condition.

Before the visit, gather a few simple items so the inspection runs smoothly. Note when the tank was installed, and collect any earlier service records, repair receipts or drawings that show where the tank and pipes lie. Walk the outdoor area around the duplex and mark the spots where the ground has been disturbed, or where a damp patch or unusual smell has appeared. Clear access to the tank cover and the nearby fittings, and tell the technician in advance if any part of the yard is locked or occupied by parked cars. With these details ready, the visit can focus on the tank itself and give the owner a clear answer.

In a duplex, the two floors often share lines, so tests are done floor by floor.

Signs that call for underground tank leak detection

The following signs are worth checking before they grow:

• 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

Where the problem usually comes from

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

Tools we use in Aldarb

From the first visit to the report

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 — Aldarb

Common questions about underground tank leak detection in Aldarb

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 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.