A technician washing the inside wall of a water tank with a high pressure hose
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Water tank sterilization in Al Nazlah Al Yamaniyah Jeddah

Al Nazlah Al Yamaniyah is a densely built popular quarter in south Jeddah centred on Khuzam Palace. The buildings range from old Hijazi houses to modern apartment towers, and tanks here accumulate heavy sediment from old soil and narrow pipeline systems. Cleaning and sterilization must account for the mixed-age character of the district and the variety of tank ages.

  • 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 Nazlah Al Yamaniyah

Tanks here tend to collect more sediment due to mixed pipeline ages and old foundations that provide natural sources of water turbidity. The method is set out in full on what Water tank sterilization involves.

The first reason

Old apartment tanks on roofs above dense streets

The older houses and apartment buildings have small rooftops tanks installed decades ago with cracked internal walls and thick sediment. Water passes through very old iron pipes that rust inside and add particles to the flow.

The second reason

Narrow complex piping from main street to houses

King Khalid Street and the narrow lanes carry overlapping water lines fed from different sources. Sediment collects in low points and bends.

The third reason

Seasonal demand and high summer humidity

The district is dense and summers are long with very high heat. Tanks are exposed to direct sunlight and algae and bacteria grow rapidly.

The character of Al Nazlah Al Yamaniyah

Apartment district: residential blocks, repeated floors and shared entrances

Apartment buildings in Al Nazlah Al Yamaniyah are old and of mixed ages, with rooftop tanks exposed to heat and contamination from air and insects. Cleaning and sterilization requires a team familiar with old structures and able to access tanks on high narrow roofs.

Before treatment

What we read inside the tank before anything starts

An old densely populated quarter in south-eastern Jeddah around Khuzam Palace, home of the Jeddah Regional Museum. King Khalid Street runs through it with shopping centres, schools, restaurants and cafes, and the population is very dense with closely-spaced buildings.

Fine wet sand seen close up

Sediment on the floor

White and cloudy sediment collects at the floor and corners, sourced from rust breakdown in iron pipes and mineral dissolution in the old soil.

A concrete wall carrying a damp green layer

The slime film on the wall

Green and brown algae grow on tank walls because the quarter is dense, sunshine and heat are intense, and rooftop tanks face direct solar exposure.

A plastic water tank standing on a rooftop

Light and heat

Foul odour and bitter taste come from decomposing bacteria and organic matter trapped in thick sediment, especially during long periods without sterilization.

A concrete surface carrying fine cracks

The lining and any cracking

Cracks and leaks allow dirt and insects to enter through gaps in the tank walls and cover opening.

A metal cover over a water tank opening

The lid and the openings

The pipes connected to the tank carry a thin layer of algae and bacteria that must be flushed away with high pressure from the furthest outlet point.

A glass of water on a kitchen counter

What shows up at the tap

Visible water turbidity signals either unsettled sediment or rapid bacterial growth. Both require immediate cleaning and sterilization.

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 Jamiah Sub-Municipality

Al Jamiah sub municipality spans the older south of Jeddah. Planned districts such as Al Fayha, Al Thaghr and Madain Al Fahd sit beside crowded popular quarters like the Nazlahs and Al Quraiyat, and beside cleared or clearing land in Ghulail, Petromin and Al Thaalibah awaiting redevelopment. Apartment buildings stand close together above dense runs of shops and restaurants along Old Makkah Road and Prince Majid Road. Drainage in the popular quarters is ageing, humid air drifts in from the port and refinery side to the west, and the flat low lying ground holds rainwater in narrow streets.

Questions about this district

Do older tanks need more frequent sterilization than new ones?

Yes, much more often. Old tanks have thick sediment and cracks that allow dirt and bacteria to enter. Cleaning takes longer and requires more intensive scrubbing.

What causes white cloudiness and turbidity in the tank?

Sediment comes from old rusted iron pipes breaking down inside, and natural minerals in the old soil that settle out.

Is regular cleaning enough or do we need extra sterilization?

Cleaning alone is not enough. Sterilization is essential because sediment provides a breeding ground for bacteria and algae; cleaning removes sediment and sterilization kills the organisms.

How often should the tank be sterilized per year here?

Because of heat, density and age, at least twice yearly or every six months. Long periods without sterilization allow bacteria and algae to multiply rapidly.

Do old water pipes affect tank cleanliness?

Absolutely. Old pipes rust and crumble internally, continuously adding particles. Cleaning the tank alone does not solve the problem if the pipes keep contaminating it.

Can we sterilize the tank and replace pipes at the same time?

Yes, if pipes are very old it is best to replace them just before or after sterilization to ensure lasting cleanliness.

How much does water tank sterilization in Al Nazlah Al Yamaniyah 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 Nazlah Al Yamaniyah.

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