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

Water tank cleaning in Al Nazlah Al Yamaniyah Jeddah

Al Nazlah Al Yamaniyah is an old popular quarter in south eastern Jeddah with tightly packed apartment blocks, furnished short let flats, and very narrow streets full of people and activity. Khuzam Palace stands in the centre housing the Jeddah Regional Museum, and small shared tanks sit on the roofs of old buildings serving dozens of residents and guests. Water cuts frequently because demand is very heavy, and Old Makkah Road and King Khalid Street continuously throw dust over the district.

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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 Nazlah Al Yamaniyah

Al Nazlah tanks cycle at maximum speed because the resident and guest population is so large, and the old tanks leak and corrode steadily. The method is set out in full on the full Water tank cleaning page.

The first reason

Old buildings and tiny shared tanks serving very high density

Al Nazlah is an old quarter, buildings are tightly packed and tanks are very small. Each tank serves dozens of flats and guests, and demand empties the tank many times daily.

The second reason

Dust and exhaust from heavy traffic on main roads

Old Makkah Road and King Khalid Street bound the district and carry heavy traffic. Dust, fumes and grit from the roads enter tanks through vent openings and poorly sealed hatches.

The third reason

Old cracked linings and moisture from deteriorating roofs

Roofs of old buildings are damp and seep. Tanks in Al Nazlah are aged and cracked, allowing contaminated water from outside to seep through cracks and mix with drinking water.

Landmarks of Al Nazlah Al Yamaniyah

Al Nazlah tanks sit on the roofs of old buildings clustered around Khuzam Palace on King Khalid Street and Al Shams Al Mushriqa Street. Access is via Old Makkah Road which bounds the district on the north, where the main water supply pipes run beneath the road.

Khuzam Palace (Jeddah Regional Museum)
King Khalid Street
King Saud Mosque near Khuzam
Al Shams Al Mushriqa Street

Before treatment

The condition of the tank decides the method

A very old densely crowded residential quarter with closely spaced buildings and tight streets, where small shared tanks on deteriorating rooftops serve very high population density.

Fine brown sediment beneath shallow water

The layer on the floor

Floor sediment is thick and adhesive from road dust, exhaust fumes and heavy metals carried on polluted air.

Light and algae

Algae and fungi grow fast from light, warm water and organic pollutants carried from the roads.

A damp concrete wall carrying a dark deposit

The deposit on the wall

A thick black and green layer of grime and fungal growth covers the walls with a heavy coating.

A concrete surface with a fine hairline crack

The lining and hairline cracks

Concrete linings have cracked from years of moisture and heat stress, and large cracks continuously leak contaminated water inward.

The lid of a water tank on a building roof

The lid and the access hatch

Lids and hatches are loose and seals are completely failed, some openings may hang fully open.

A plastic pipe leaving the exterior wall of a building

The vent and the overflow pipe

Vent openings are clogged with dust, spiders and debris, or stand so open that all pollutants enter freely.

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 cuts out at our flat at peak morning and evening. Does the block tank have a problem?

The tiny tank empties fast because demand is so high. Weak pressure and water cuts are normal in Al Nazlah. The tank may need cleaning to remove sediment that clogs the pipes.

Water at our flat is cloudy but the next flat has clear water. Why?

Lower flats receive water straight from the tank outlet and it carries sediment. Upper flats receive clearer water. Regular tank cleaning is vital.

Khuzam Palace and the museum beside the district use lots of water. Does it affect our tank?

The museum may have its own separate tank or dedicated supply. But if it is on the same network it may draw heavily during opening hours.

The streets are very narrow and dust from the expressway blows over the whole district. Is the water safe?

Road dust and fumes enter the tanks but regular cleaning and disinfection reduce the problem. But water may contain fine particles of lead and other pollutants.

The building is very old and the tank is ancient. Will it withstand high pressure cleaning?

Old tanks are fragile and may break under high pressure. An inspection before cleaning is essential, and we may need gentle low pressure washing.

Water leaks from the tank onto the building walls and moisture is very high. Is that connected?

Leaking from the old tank increases wall moisture and encourages mould and decay. Repair or replacement is necessary.

How much does water tank cleaning 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.