Water tank cleaning in Khalij Salman, Jeddah

Potable-rated materials

Linings and disinfectants cleared for drinking water tanks, not general-purpose products.
You get the downtime first

How many hours the tank is out of service, told before we start rather than after we finish.
A first-draw flush

We run the first draw off after refilling, and the tank is not handed back until the water runs clear.
Ground and roof tanks

Villas, apartment blocks and premises that need a written record of each visit.

Why the job is different in Khalij Salman

Tanks here rarely dry completely inside; walls stay damp even in hot weather, and this speeds mould and black fungal growth faster than any other district type. The method is set out in full on how we approach Water tank cleaning.

The first reason

Black mould and fungus coat the walls

Constant coastal humidity creates perfect conditions for mould and black fungus on tank walls, especially in corners and dark areas. Black mould is more hazardous than green algae and produces toxins that trigger respiratory and skin allergies.

The second reason

Salt and mineral salts leave permanent stains

Salt-laden air absorbed into the water deposits as white or dark layers on walls and floor. The salt kills some organisms but leaves behind toxins that alter taste and smell even after disinfection.

The third reason

Moisture causes concrete to crack and weaken

High humidity penetrates the fine pores in concrete, and salt crystals form inside and expand the pores. New cracks appear yearly and tank leakage begins as the salt cycle repeats.

Landmarks of Khalij Salman

Tanks along Khalij Salman beach and around Lakes City need special care because coastal humidity never drops, and the nearby park and surrounding chalets increase water consumption and accelerate contamination.

Khalij Salman Beach
Lakes City
Khalij Salman Park
Khalij Salman Chalets

Before treatment

The condition of the tank decides the method

A shallow winding bay edged with coral reefs near Lakes City and the park, humidity stays high all year and the air is thick with salt spray and mist.

Fine brown sediment beneath shallow water

The layer on the floor

The floor layer is grey or brown from salt, clay and fine sand, always damp and sticky, needing long soaking and strong water pressure to remove fully.

Light and algae

Green algae grows in light but is less aggressive than black fungi; it covers only exposed wall areas where sunlight reaches directly.

A damp concrete wall carrying a dark deposit

The deposit on the wall

Wall deposits are white salt and black mould side by side in the same area, difficult to remove and needing fungicide treatments alongside mechanical cleaning.

A concrete surface with a fine hairline crack

The lining and hairline cracks

Hairline cracks appear and widen quickly as salt crystals form inside concrete pores and expand with each humidity cycle.

The lid of a water tank on a building roof

The lid and the access hatch

The lid and access door rust quickly from salt exposure, and the maintenance hatch inlet may be surrounded by black mould.

A plastic pipe leaving the exterior wall of a building

The vent and the overflow pipe

The vent opening stays perpetually damp and may be blocked by fungal growth, and the overflow pipe may leak from cracks around its seal and joints.

How we work

1
Inspect before the drain

Tank type and material, the condition of the lining, the depth of the sediment, the lid and the vent, and where the drained water will go. We agree the window without supply before anything is opened.
2
Drain, then lift the sludge

The water leaves through the outlet, then the layer beneath it is taken out by hand and by suction. That layer is the reason for the visit, not the water that ran out ahead of it.
3
High pressure wash

Walls, floor and the joint where they meet, with a brush wherever the film resists, then the wash water is taken out completely so nothing we lifted settles again.
4
Disinfect and put back in service

Disinfectant over every internal surface, left for its contact time and then rinsed out, followed by the refill, a first draw off at the taps, and a report on what was inside the tank.

What water tank cleaning includes

An inspection before the valve

Tank type, lining condition, depth of sediment, lid and vent, recorded before any water leaves.
Full drain and sediment removal

The water through the outlet, and the layer below it by hand and by suction until the floor itself is showing.
Pressure washing walls and floor

High pressure across the surfaces and corners, and a brush on anything water alone will not lift.
Disinfection after the wash

A disinfectant intended for drinking water tanks, named to you before it is used, left for its contact time and then rinsed out.
Refill and the first draw off

We refill, run the taps so the new water moves through the pipework, and tell you when it is ready to use.
A report and the next date

What was inside the tank, anything on the lid or the lining that needs repair, and a sensible date for the next clean.

What is different about Dhahban Sub-Municipality

Dhahban sub municipality is the northern coastal strip of Jeddah, running from the north bank of Sharm Obhur up to the old village of Dhahban and Salman Bay. Its districts are recently built, with owner occupied villas and apartments, beach resorts and chalets on the shore, and land subdivisions still being developed. Nearness to the sea keeps humidity high all year, irrigated lawns in villas, resorts and district parks hold water, Wadi Obhur and the vacant plots between buildings give rodents and reptiles shelter, and the old fishing village of Dhahban gives the far north a rural edge.

Questions about this district

Is black mould inside the tank dangerous?

Yes. Black mould produces toxins that trigger respiratory allergies, skin irritation and asthma attacks, especially in children, the elderly and those with existing lung conditions.

Why does the water smell odd even after disinfection?

Salt and dead fungal debris from the disinfectant leave behind a metallic, musty smell. Mechanical cleaning before disinfection is essential to remove odours completely.

Do tanks need more frequent cleaning on the coast?

Yes, every two to three months at most. Humidity speeds decay and mould grows even in disinfected water.

Will small cracks in the concrete tank leak soon?

Not yet, but humidity and salt expand the cracks. Within a year or two they may leak significantly.

Should we coat the tank inside with a protective layer?

Yes. A food-safe protective coating protects concrete from salt and moisture, reducing the need for frequent cleaning.

Chalets and resorts use more water. Does higher use speed contamination?

Higher consumption moves water faster, stirring floor sediment, but higher turnover also slows fungal growth slightly by reducing stagnation.

How much does water tank cleaning in Khalij Salman cost?

It is set after the inspection, because the price follows the type of infestation, the size of the space, how far it has spread and the number of visits it needs. Send a photo and a description on WhatsApp and we will give you an estimate before we reach Khalij Salman.