A technician washing the inside wall of a water tank with a high pressure hose
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Water tank sterilization in Al Hajun Makkah

Al Hajun is a historic district on the slopes of Jabal Al Hajun northwest of the Grand Mosque, and water here comes from deeper in the network and is affected by steep elevation and descent. Old tanks in historic houses are built from stone or weak concrete, and sediment settles fast because water pressure varies due to hillside topography.

  • 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 Hajun

Houses here are very old and tanks are older still; water carries heavy impurities from corroded pipes and high elevation. Residents complain of cloudy water and weak pressure due to tank distance from the water source. The method is set out in full on what Water tank sterilization involves.

The first reason

Stone and weak concrete tanks in old houses

Old tanks are built from ancient stone or concrete that has lost quality over decades. Fine cracks and holes allow dirt and impurities to enter from outside. Internal walls are rough and trap sediment easily.

The second reason

Variable pressure and steep elevation cause rapid sediment fall

Al Hajun spans very different elevations and water rises and falls in pipes. Changing pressure causes rapid mineral and salt settlement in the tank. Flow is sometimes weak, sometimes strong.

The third reason

Corroded and old pipes contaminate the water

Pipes in Al Hajun are very old and rusted inside. Rust particles and iron mix into the water and settle in tanks. Cleaning solves the problem only temporarily if pipes are not replaced.

The character of Al Hajun

Historic district: close-set buildings, narrow lanes and ageing services

Al Hajun is historic and houses and tanks are very old. Cleaning requires care not to crack weak tanks, and the crew must have special tools for stone and old concrete tanks. Complete tank replacement may be needed if damage is severe.

Before treatment

What we read inside the tank before anything starts

A historic quarter northwest of the Grand Mosque around the Al Mualla cemetery on the slope of Jabal Al Hajun, with old houses climbing the hill, Hajun Street descending towards the Haram, the Second Ring Road and Ain Zubaidah Street crossing the district, and Al Utaybiyah adjoining to the north.

Fine wet sand seen close up

Sediment on the floor

Mineral and iron deposits come from rust in old pipes and tanks, settling fast due to variable pressure.

A concrete wall carrying a damp green layer

The slime film on the wall

Algae grows slowly in dark old tanks, but rust is the bigger problem.

A plastic water tank standing on a rooftop

Light and heat

Bad odours come from rust and deposited organic matter, especially in narrow corners.

A concrete surface carrying fine cracks

The lining and any cracking

Sand and soil impurities enter through fine cracks in stone tanks and weak concrete.

A metal cover over a water tank opening

The lid and the openings

Tank floor and corners contain crusted rust and sediment that is hard to remove by normal washing.

A glass of water on a kitchen counter

What shows up at the tap

Exposed old tanks need regular inspection because concrete quality degrades over time.

How we work

  1. 1

    Inspect and record the condition

    We open the hatch and work through what the tank is made of and how big it is, how deep the sediment lies, the state of the lining, whether the lid and the overflow seal, and whether there is a crack that has to be repaired before any sterilizing.

  2. 2

    Drain and lift the sediment out

    The water goes out, then the silt and sand are lifted off the floor by suction rather than pushed toward the outlet, because pushing them sends them into the house pipework and the heater.

  3. 3

    High pressure wash

    Walls, floor, corners and the area around the outlet, until the slime film is completely gone. This is the step that makes the sterilizing after it mean anything.

  4. 4

    Sterilize, rinse, then return to service

    The sterilizing agent goes onto the walls, the floor and the underside of the lid and is left for its contact time, then we rinse, refill and run the furthest tap until the whole line is clear.

What water tank sterilization includes

  • A technician inspecting with a flashlight

    A recorded inspection

    Material, capacity, sediment depth, the state of the lining, the lid and the overflow, all before any work begins.

  • A metal floor drain

    Draining and sediment removal

    The water out, and the silt and sand lifted off the floor instead of being pushed into the outlet and the house pipework.

  • A spray nozzle in close detail

    High pressure washing

    Walls, corners and around the outlet, until the biofilm that no disinfectant penetrates has gone.

  • A spray nozzle in close detail

    Sterilizing the internal surfaces

    A sterilizing agent meant for drinking water tanks, applied to the walls, the floor and the underside of the lid, and left for its contact time.

  • A clean kitchen counter after treatment

    Line flush and aftercare

    Rinse, refill and a flush from the furthest tap, when the water is usable again, and what to change in the filter afterwards.

  • The visit report being written on a clipboard

    The next cycle

    We agree the right interval for your tank from how it is filled, how much sun it takes and the condition of the lid.

What is different about Al Utaybiyah Sub-Municipality

Al Utaybiyah sub municipality covers the old districts north of the Grand Mosque: the hillside quarters of Al Hajun, Al Utaybiyah and Al Bayban, Al Zahir and Al Shuhada at the northern entrance, and the newer Al Zahra, Al Diyafah and An Nuzhah westward. Its building stock is among the oldest in Makkah, stone houses on the hills, packed apartment blocks and sewers decades old, threaded with crowded markets like the Utaybiyah souq and furnished flats that fill in the pilgrim seasons. Wadi Al Zahir and Wadi Al Tanim carry storm water through it, and industrial workshops line Hajj Street.

Questions about this district

Why is water cloudy and odorous even immediately after cleaning?

Old corroded pipes continue to release rust particles. Cleaning solves the problem temporarily but the pipes need repair or replacement.

Will water be safe to drink after sterilization in Al Hajun?

Yes if the tank is well cleaned and pipes are flushed. But if pipes are very corroded, additional filters are advisable.

Does weak pressure in Al Hajun affect cleaning?

Yes. Weak pressure means faster sediment fall and harder cleaning. We may need longer flushing or additional pumps.

How often per year should tanks be cleaned in Al Hajun?

At least every four months because sediment and rust accumulate fast. If pipes are very bad, every three months is better.

Why are Al Hajun tanks worse than other districts?

Tanks are very old, pipes are corroded and elevation causes weak pressure. All three together make water far more contaminated.

Does replacing the tank solve all problems?

It may solve part of it, but if old pipes are not replaced, rust continues to contaminate the new tank.

How much does water tank sterilization in Al Hajun 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 Hajun.

Nearby districts we cover

Other services in Al Hajun

Other services we provide to residents of Al Hajun.

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Need water tank sterilization in Al Hajun? Tell us what you saw and we will tell you what it needs

We reach Al Hajun at a time we agree, and you get the full cost before we start.

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