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

Water tank cleaning in Al Quraiyat Jeddah

Al Quraiyat is an old popular district in south Jeddah, apartment buildings crowded on narrow streets with high population density. The buildings are relatively aged and basic services are available. One tank may serve fifty families or more, so water consumption is very heavy. The building's internal network may be ageing. Sea humidity from the port and refinery to the west may affect water quality.

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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 Quraiyat

Tanks here serve large populations, so water consumption is heavy and sediment accumulates rapidly. Humidity from the port and refinery can enter the tank through vent openings. The method is set out in full on the full Water tank cleaning page.

The first reason

High population density means low water pressure throughout the day

Al Quraiyat apartment buildings may house hundreds of residents in one tower. One tank may serve fifty families or more. Water pressure runs low all day. This chronic low pressure can suck air into pipes and contaminate the water.

The second reason

Ageing piping inside building walls raises sediment

The buildings are old and internal pipes may be decades old. Rust and scale from the pipes mix into the water. Cleaning the tank alone may not help if the pipes are actively corroding.

The third reason

Sea humidity from port and refinery enters the tank

The port and refinery to the west emit high humidity and chemical vapours. These can enter the tank through vent holes. The water may carry odd smell or taste from this drift.

Landmarks of Al Quraiyat

Al Quraiyat lies in south Jeddah between the College of Telecommunications and Electronics and the Nazlah Al Sharqiyyah quarter. We reach tanks via King Khalid Road and Al Falah Road where the close-set apartment buildings stand.

College of Telecommunications and Electronics
Al Kulliyah Mosque
King Khalid Road
Al Falah Road

Before treatment

The condition of the tank decides the method

A densely populated old district in south Jeddah within Al Jamiah sub municipality, with crowded apartment buildings and ageing drainage networks set on low lying ground that retains moisture.

Fine brown sediment beneath shallow water

The layer on the floor

Sediment here comes from heavy use patterns as much as from ageing pipes. High consumption lifts deposits from both the floor and the pipeline network.

Light and algae

Algae may grow but aged piping is the bigger issue. Low pressure may allow slow moving particles to settle.

A damp concrete wall carrying a dark deposit

The deposit on the wall

Wall deposits may be coloured or thick from sea humidity and nutrient shedding from pipes. This film may worsen in damp weather.

A concrete surface with a fine hairline crack

The lining and hairline cracks

Cracks are uncommon in newer tanks but shared connecting pipes may leak at joints.

The lid of a water tank on a building roof

The lid and the access hatch

The lid is usually sealed but pipes leaving the tank may not be airtight.

A plastic pipe leaving the exterior wall of a building

The vent and the overflow pipe

The vent hole can admit humidity from port and refinery to the west, and the overflow may discharge recycled water.

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 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

Water in the building cuts out during evening peak hours. Why?

The tank is small for the population and evening demand is very heavy. The tank cannot refill fast enough. A second tank or stronger pump may be needed.

The third floor water is cloudy but the ground floor is clear. Why?

Low pressure may cause this. Upper floors may draw from lower tank levels where sediment sits. Deep cleaning and pressure system inspection are needed.

The water smells like the refinery. Is this possible?

Yes, the refinery and port are near and may emit vapours. If vent holes are unprotected, smell can enter the tank. Covering and filtering the vents is necessary.

Does a building with so many residents need more frequent cleaning?

Yes, heavy consumption causes faster sediment buildup. Cleaning every two or three months may be necessary instead of every six months.

Humidity in the flat is very high even though the weather outside is dry. Why?

Sea humidity from the west may raise the tank water vapour level. Also, the flat may sit very close to damp ground below it.

Should we check the building pipes at the same time as the tank?

Yes, old pipes may be the sediment source as much as the tank itself. A full network inspection may recommend replacing sections of piping.

How much does water tank cleaning in Al Quraiyat 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 Quraiyat.