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

Water tank cleaning in Al Abidiyah Makkah

Al Abidiyah on the Taif road south east of the city is essentially the modern main campus of Umm Al Qura University overlooking the plain of Arafat: colleges of sharia, engineering and medicine, the university hospital, student housing, King Abdullah University Library and the university stadium. Wadi Uranah and Wadi Numan cross the low ground and carry seasonal water and year round seepage. The campus is a state of continuous building and expansion. Large tanks serve multiple buildings and growing student populations. After rain groundwater rises rapidly and may encircle the tank.

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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 Abidiyah

In the Al Abidiyah university campus, large new tanks serve tens of buildings and student housing, groundwater rises quickly after rain, and soil is naturally wet. The method is set out in full on our Water tank cleaning service.

The first reason

Large modern university tanks serve huge numbers of residents and users

Tanks in the university campus are large and new, but serve colleges, student housing and a hospital, meaning very large user numbers. Water sometimes cuts off at peak morning and evening when many buildings use water together. Fluctuating pressure on a large tank causes pipe and seal corrosion.

The second reason

Continuous building and exposed ground around campus raise construction dust and contaminants

The university campus is in constant expansion, and around buildings are open land, excavations and building sites. These sites raise clouds of cement dust and sand daily. Modern tanks have holes and filters, but ultra fine dust penetrates them, and continuous building means frequent cleaning is essential.

The third reason

Wadi Uranah and Wadi Numan carry moisture and soil to the tank after rain

The wadis run under and around the university buildings, and after rain carry very high moisture, mud and debris. Groundwater rises near the buildings, and nearby tanks may seep water out or let contaminated water seep in from the surrounding wet soil.

The character of Al Abidiyah

New development: ongoing construction and vacant plots between the homes

A recently built university campus means the tank receives daily construction dust and fluctuating pressure from large changing user numbers. Groundwater moisture, the wadis and continuous building together raise cleaning and disinfection demands above any ordinary tank.

Before treatment

The condition of the tank decides the method

Al Abidiyah is the Umm Al Qura University campus on the Taif road south east of Makkah, with modern university buildings and student housing, crossed by Wadi Uranah and Wadi Numan.

Fine brown sediment beneath shallow water

The layer on the floor

The floor of the large university tank collects construction dust and wadi mud, and the tank size means a thick layer forms fast.

Light and algae

Walls in a new tank appear clean at first but after initial use algae and bacteria grow from moisture and dust.

A damp concrete wall carrying a dark deposit

The deposit on the wall

The deposit on walls consists of metals and salts from wet groundwater, accumulating rapidly in the large tank.

A concrete surface with a fine hairline crack

The lining and hairline cracks

New concrete lining may have fine cracks from pressure cycling caused by high variable usage.

The lid of a water tank on a building roof

The lid and the access hatch

University tank covers are large and heavy and maintenance ports are designed for service, but dust penetrates simple filters.

A plastic pipe leaving the exterior wall of a building

The vent and the overflow pipe

Overflow and vent pipes on a large university tank are complex and may need separate cleaning and additional filters.

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 Aziziyah (Makkah) Sub-Municipality

Al Aziziyah sub municipality runs from the Bin Dawood markets to the Al Hada road and carries pilgrim traffic to Mina. Hotel towers and furnished apartment blocks fill and empty with the Hajj and Ramadan seasons, and the kitchens, restaurants and markets along Al Masjid Al Haram Road and King Abdulaziz Road leave food waste at every peak. Southwards the fabric loosens into villas and planned streets in An Naseem and Al Awali, then Al Abidiyah's campus and the old farms of Al Husayniyah, where Wadi Uranah holds water after rain and farm enclosures shelter rodents and reptiles.

Questions about this district

The university tank is large and building work continues around it. Does it need more frequent cleaning than regular buildings?

Yes. The large university tank serves multiple buildings and huge numbers of students and staff. Continuous building raises dust. Cleaning every three months is essential at such sites.

After heavy rain the water from taps in university housing runs cloudy. Why?

Heavy rain raises the groundwater, and the wadi carries water and mud. If the tank is close to the wadi or high groundwater, mud may enter through cracks. Fast cleaning after heavy rain is essential.

Wadi Uranah is near the housing and tank. Can it cause problems during Hajj season?

Hajj season pushes water use very high, and the wadi may carry high moisture. But the Al Abidiyah campus tank sits somewhat away from the main Hajj pilgrimage routes, so impact is less than districts close to the Hajj gathering areas.

The tank is new in a new building and water still cuts off at peak times. Why?

The tank may be adequate but old pipes in the campus may leak or be weak. Also when many buildings use water together, pressure drops. An additional pump or an extra tank may be needed.

Is cleaning a university tank different from cleaning a regular villa tank?

Very different indeed. The university tank is much larger, pipes are complex, and user numbers are huge. Cleaning needs coordination with the university and water stoppage affecting multiple buildings.

The campus is new building and the tank is new and water runs cloudy after rain and building work. What is the cure?

Construction dust, mud from the wadi and wet groundwater all seep through new concrete lining that may have fine cracks. Full cleaning after any construction work, and improve tank covers and inlet filters.

How much does water tank cleaning in Al Abidiyah 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 Abidiyah.