Water tank cleaning in Umm Hablain, Jeddah

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 Umm Hablain

New villas here fill their tanks for the first time and find a thin white layer of fine sand and clay on the floor within days, requiring a pre-occupancy clean before water is used. The method is set out in full on the full Water tank cleaning page.

The first reason

Dust from construction and heavy traffic settles fast

A district of active building sends a daily haze of fine dust and cement powder through the air. This dust enters tanks through loose caps, small cracks in cheap covers, and ventilation openings designed for air, not filters. High pressure washing removes these layers easily, but they return within weeks if construction continues nearby.

The second reason

High groundwater pushes moisture and deposits upward

Umm Hablain's soil is naturally wet from a shallow water table. Moisture seeps up through the tank floor and walls even through thick concrete, causing layers of sediment to form faster than in drier districts. Disinfection before washing is essential here to kill waterborne bacteria that thrive in the dampness.

The third reason

Incomplete drainage networks slow drying after cleaning

Open storm drains and excavated pits near the villa mean water pools around the tank after cleaning and drying takes longer than in a built-out district. The moisture lingers and damp air rises back toward the tank. Final drying must be more thorough and deliberate to prevent recontamination.

Umm Hablain on the map

Umm Hablain sits about 4.5 km from Al Kawthar and about 6.5 km from Al Rayyan.

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Before treatment

The condition of the tank decides the method

Umm Hablain sits on Jeddah's north eastern edge with ongoing construction and lorry traffic, incomplete drainage networks, and seasonally high groundwater that rises near the surface.

Fine brown sediment beneath shallow water

The layer on the floor

The fine sand and clay from ongoing construction forms a loose, slippery layer on the floor that needs sustained high pressure to dislodge completely.

Light and algae

Light enters through fine cracks in cheap covers on new villas, and algae grow rapidly in the high ambient moisture here.

A damp concrete wall carrying a dark deposit

The deposit on the wall

New tank walls quickly collect a white deposit of iron and calcium salts in the first six months, which bonds firmly to the concrete and needs vigorous scrubbing.

A concrete surface with a fine hairline crack

The lining and hairline cracks

Hairline cracks in new concrete allow soil moisture from the high water table to seep inward, raising internal humidity and accelerating sediment formation.

The lid of a water tank on a building roof

The lid and the access hatch

Cheap tank covers on new villas do not seal tightly, and simple vents allow construction dust and insects to enter freely through the site air.

A plastic pipe leaving the exterior wall of a building

The vent and the overflow pipe

New overflow and vent pipes carry construction dust and small insects from the surrounding air, and need separate cleaning and disinfection.

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.

The character of Umm Hablain

New development: ongoing construction and vacant plots between the homes

A district of ongoing construction means the tank receives daily dust and the soil and moisture around the villa change constantly. This speeds sediment and algae growth, shortening the interval between cleans compared to settled districts.

Questions about this district

Why does tap water in the new villa run reddish and cloudy on the first fill?

New copper and steel piping in the villa's plumbing oxidises and releases iron and minerals into the first tank full. Building dust and debris stirred up during construction mixes into the water. The first fill must be drained completely and the tank cleaned before occupancy.

Does the high moisture around the villa from wet soil enter the tank and cause algae?

Yes. In Umm Hablain the groundwater and damp soil seep through small cracks and loose seals in covers and access ports. Algae thrive in the moisture and light that finds its way in. Disinfection after washing stops them temporarily, but they return if seals remain loose.

Must we drain the tank completely or is sediment suction from the bottom enough?

Complete drainage is essential in Umm Hablain because the settled layers of sand and clay on the floor and walls are compacted from the wet soil and dust. Pressure washing from a distance may not reach every corner. Suction alone leaves residue that becomes a breeding ground for bacteria.

After cleaning, how long must we wait before refilling the tank?

The tank must dry completely of surface moisture, usually four hours in normal Jeddah heat. But in Umm Hablain where humidity stays high, wait at least six hours before refilling to ensure no trapped moisture remains on the walls and floor.

Does construction dust from neighbouring villas enter our tank?

Continuous building work nearby sends clouds of cement dust, sand and clay powder into the air all day. This dust enters through access hatches, ventilation openings and any small crack in the cover. Tanks here need cleaning twice yearly because of this constant dust intrusion.

The new tank has hairline cracks in the concrete wall. Will water seep out?

Hairline cracks in new concrete allow moisture to seep inward slowly, not outward, especially where groundwater is high as it is here. The seepage is small but enough to raise the tank's internal humidity and speed algae and bacterial growth. Moisture eventually condenses on the floor and walls.

How much does water tank cleaning in Umm Hablain 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 Umm Hablain.