A technician washing the inside wall of a water tank with a pressure hose

Water tank cleaning in Al Adl Makkah

Al Adl is an eastern extension along King Faisal Road, with apartment blocks and pilgrim housing. Tanks fill and empty at extreme speed during Hajj and Ramadan seasons, water cuts off suddenly and returns under very high pressure, and sediment is flushed from the floor and driven into the flat pipes at great velocity. The district is bounded by Jabal Al Nour to the north and the holy sites to the east.

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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 Al Adl

During Hajj season, tanks fill from empty to full in hours, pressure rises to peak almost instantly, and sediment is violently mobilised and forced into fragile pipes at high velocity. The method is set out in full on the full Water tank cleaning page.

The first reason

Pressure swings from zero to peak in hours

Hajj season raises demand at extreme speed, tanks fill from empty to completely full in a handful of hours. Very high pressure mobilises all sediment from floor and walls at once and drives it with great force.

The second reason

Water cuts off suddenly then returns at very high pressure

Repeated water cuts at peak times mean the tank empties and pressure falls to zero. When water resumes, it arrives at very high pressure and hurls sediment violently into the distribution network.

The third reason

Temporary residents change the usage pattern

Pilgrims and lesser pilgrims stay for weeks then leave, so the tank serves a changing population. Water standing between seasons grows bacteria and develops an off odour by the next peak.

The character of Al Adl

Apartment district: residential blocks, repeated floors and shared entrances

Pilgrim housing means the tank serves permanent residents and seasonal visitors simultaneously, and pressure changes with extreme rapidity during peak seasons. Cleaning must account for repeated very high pressure episodes and water that stands and grows bacteria between seasons.

Before treatment

The condition of the tank decides the method

A district along the Fourth Ring Road with apartment buildings and pilgrim hotels, tanks serving both permanent residents and seasonal visitors. Pressure fluctuates wildly between seasons.

Fine brown sediment beneath shallow water

The layer on the floor

The floor layer accumulates fast because high pressure mobilises sediment violently, then lets it fall back to the base with great force.

Light and algae

Algae and bacteria grow during low-use periods and water cuts, especially between seasons when demand drops and water stagnates.

A damp concrete wall carrying a dark deposit

The deposit on the wall

The wall deposit is thick from repeated high pressure episodes that throw minerals against the walls with force.

A concrete surface with a fine hairline crack

The lining and hairline cracks

Hairline cracks multiply from rapid expansion and contraction as pressure swings on and off abruptly.

The lid of a water tank on a building roof

The lid and the access hatch

The lid and access hatch experience sudden pressure spikes, so they need cleaning and the seals and fasteners must be checked.

A plastic pipe leaving the exterior wall of a building

The vent and the overflow pipe

The vent may be damaged by sudden pressure surges, so it must be cleaned and inspected to ensure it is functioning.

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 Al Maabdah Sub-Municipality

Al Maabdah sub municipality climbs from Al Abtah and Al Jumayzah beside the Al Mualla cemetery up through Al Khansa and Rai Adhakhir to Al Adl, Jabal Al Nour, Wadi Jaleel and Qurtubah on the outer ring roads. It mixes hotels and pilgrim housing near the Grand Mosque with old popular houses on hillside passes, new housing schemes on valley floors that carry flash floods after rain, and industrial plots, workshops and warehouses along Al Hajj Street in Qurtubah. Street widening and expropriation leave partly demolished frontages in Al Khansa.

Questions about this district

Does the water cut off in our flat at peak times during Hajj because of the tank?

Yes, tanks empty from very high demand. Cleaning improves flow but does not increase capacity; additional distribution points may be needed instead.

Why is the water cloudy right after it returns following a cut?

A water cut leaves sediment on the tank floor, and when pressure returns suddenly very high, it throws sediment violently into the pipes and flats.

Is cleaning the tank one week before Hajj enough preparation?

Yes, but a second cleaning one week after Hajj is necessary because sediment accumulates at extreme rates during the season.

Do all flats in the block report cloudy water at the same time?

If they do, the issue is the shared tank. Cleaning solves this if it is a pressure and sediment problem, not a water source problem.

Why is water pressure weak in lower floors during Hajj season?

Very high demand drains the tank faster than it refills, pressure drops, and lower storeys receive lower pressure because they are at the end of the network.

After Ramadan ends, the water changes colour or smells odd. Is that normal?

Water that stands after the season ends allows bacteria to multiply. Cleaning after each season is necessary to manage the bacterial load.

How much does water tank cleaning in Al Adl 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 Al Adl.