Water tank cleaning in Kudai, Makkah

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 Kudai

Park and hotel tanks here empty and refill many times a day in season, and the rapid discharge stirs up the settled layer so that cleaning uncovers repeated heavy sediment loads beneath the outlet. The method is set out in full on how we approach Water tank cleaning.

The first reason

High tank turnover and rapid floor sediment mixing

Coach park and hotel tanks are large and cycle multiple times daily in season. This rapid filling and draining stirs the settled layer and mixes it back into the water column, so cleaning must work against constant disturbance of the tank floor.

The second reason

Quarry and construction dust entering continuously

Jabal Khandamah quarries and the open building sites around Kudai release stone dust and grit into the air year round. This dust enters tanks through vent openings and access hatches and settles fast to create thick layers on walls and floor.

The third reason

Extreme seasonal heat swings and thermal shock

Rooftop hotel tanks stand exposed to intense direct sun in summer and rapid cooling at night, with strong thermal cycling between seasons. Temperature swings accelerate sediment formation and algae growth on walls, and cause moisture condensation inside the tank.

Landmarks of Kudai

Tanks serving Kudai hotels and warehouses sit within sight of the Kudai Car Parks themselves, with access typically arranged via Ajyad Street which separates them from the residential Kudai Towers. Work in this area starts from the south of the Grand Mosque, where the Zamzam Water Project stands adjacent to many of the district's larger tanks.

Kudai Car Parks
Zamzam Water Project
Kudai Towers
Kudai Ajyad Tunnel
Jabal Khandamah

Before treatment

The condition of the tank decides the method

A hillside setting with active building work, wide coach parks and open construction sites, where airborne dust from the quarries and roadworks rises into tank vents almost constantly.

Fine brown sediment beneath shallow water

The layer on the floor

Sediment in Kudai tanks is heavy and adhesive because the water carries dust from building sites and roads, and the floor layer builds up fast from repeated discharge cycles.

Light and algae

Exposed rooftop tanks let daylight reach the water and trigger green and brown algae growth on the walls and floor throughout the year.

A damp concrete wall carrying a dark deposit

The deposit on the wall

Walls accumulate a yellow brown or grey film of iron oxide and heavy metals carried into the tank from the surrounding dust and quarry material.

A concrete surface with a fine hairline crack

The lining and hairline cracks

Old tank linings crack under the extreme thermal expansion and contraction caused by the harsh daytime heat and rapid cooling. Hairline cracks form and leak water slowly outward.

The lid of a water tank on a building roof

The lid and the access hatch

Tank lids and hatches stand exposed to strong winds and airborne grit, so seals crumble and openings allow more dust and insects to enter the tank.

A plastic pipe leaving the exterior wall of a building

The vent and the overflow pipe

Vent openings become clogged with dust blown from Jabal Khandamah and active building work, reducing air circulation inside the tank and trapping humid air that encourages bacterial growth.

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 Misfalah Sub-Municipality

Al Misfalah sub municipality runs downhill from the south of the Grand Mosque through Al Misfalah, Kudai and Al Rawabi to Al Taqwa, Al Hindawiyah, Al Khalidiyah and Al Rusayfah at the third ring road. The northern end is old apartment blocks and pilgrim hotels with restaurants along Ibrahim Al Khalil Street and the huge coach parks at Kudai. The south and west are dense popular districts with countless small shops and unplanned hillside housing, some of it already cleared for redevelopment, giving way to orderly land grant schemes in Al Rusayfah beside the railway station.

Questions about this district

Our hotel tank empties and fills several times daily in season. How often should we clean?

Rapid discharge stirs sediment from the floor repeatedly. We recommend cleaning twice yearly as a baseline, or more often if water turns cloudy quickly after cleaning.

Construction dust keeps entering through the top vents. Is washing enough to fix it?

Quarry dust and construction grit settle fast and form thick deposits on walls and floor. Cleaning includes pressure washing and sediment removal, but you may need to inspect and seal vent openings to stop continuous entry of airborne particles.

The tap water looks slightly red in summer. Where does that come from?

Extreme heat on an exposed roof accelerates oxidation reactions inside the tank, especially in metal pipework and mineral deposits. Cleaning and disinfection stop this, and we can inspect the tank lining to check for rust or corrosion.

The tank sits on a fully exposed roof in direct sun all day. Does that matter?

Exposed tanks see constant algae growth and bacterial colonisation from direct light, plus rapid thermal swings that increase sediment formation. Regular cleaning and strong disinfection are essential here.

Our hotel only operates during hajj season. When should we schedule tank cleaning?

Clean the tank a few weeks before the season starts so you begin with clean water. You may also need a quick mid season check if guests complain about water quality.

The tank leaks slightly from the base and the outer walls around the hotel are damp. Is this dangerous?

A slow leak means the tank lining has lost its seal or hairline cracks have opened. Cleaning will expose these problems clearly. You may need the tank repaired or replaced if cracks are significant.

How much does water tank cleaning in Kudai 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 Kudai.