Underground tank leak detection for villas in Mdayn Al Fhd, Jeddah

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

What is specific about Mdayn Al Fhd for underground tank leak detection

The centre of Mdayn Al Fhd is at 21.4598, 39.2377, about 11.5 km from the centre of Jeddah, with an approximate radius of 1.2 km. The service-area circle on the map below is drawn from this point. The centre of Mdayn Al Fhd sits about 24 m above sea level (SRTM open elevation data).

Mdayn Al Fhd is about 6.5 km from the sea coast (OpenStreetMap). Main roads in or near Mdayn Al Fhd: Al Falah Road, Old Makkah Road, Al Iskan Street.

A villa owner in Mdayn Al Fhd usually relies on an underground water tank without thinking about it until the monthly water bill climbs or the pump runs longer than it should. Often the first sign of trouble is damp soil near the tank wall, a patch of greener grass above the pipework, or a drop in pressure at the taps during the evening. Because the tank sits out of sight, a slow leak can run for a long time before anyone notices, and by then the cost of repair has grown with it.

The local facts shape how an owner should think about this. Mdayn Al Fhd sits roughly 11.5 km from the centre of Jeddah, with its centre at 21.4598, 39.2377, which places it in a fairly contained residential area with a radius of about 1.2 km. Its centre lies about 24 m above sea level, and it is about 6.5 km from the sea coast. For an owner, this means the district is not right on the shoreline, so the ground and tank conditions are not the same as in a coastal plot. Knowing your exact location in the district also helps when you describe the site to a technician, since the pipe runs and tank position vary from villa to villa.

If you suspect a leak in your underground tank, take these steps in order. First, record your water meter reading at a quiet time with no taps running, then check again after several hours to confirm a loss. Second, look for wet soil, soft ground or unusual growth around the tank and the supply lines, and note where it appears. Third, arrange an inspection of the tank and its connections before any digging begins, so the scope of work is clear. Fourth, if the tank interior needs attention, ask for the internal coating to be priced per m², which in this market typically falls within SAR 25–65 per m², so you can compare quotes on the same basis. Finally, keep a written record of readings, findings and repairs so you have a clear history for the next check.

In a villa, tanks, the roof and the yard lines are usually yours to look after, so it helps to know where the main valve and tank hatches are.

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.
• Cracks in the concrete tank walls or floor — we check this before anything else.
• A float valve that does not close, so water is wasted — we check this before anything else.

Tools we use in Mdayn Al Fhd

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.

Mdayn Al Fhd in facts and sources

Short answers for Mdayn Al Fhd

Common mistakes we see

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

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.