The right gear for drinking water
Pumps to clear sludge, scrubbing to remove biofilm, and disinfectant meant for potable storage.
Water Tank Cleaning in Quwaizah, Jeddah
Quwaizah is one of Jeddah's oldest districts in the hills and valleys belt east of the city, directly affected by the 2009 flood. Tanks here are very old and collect groundwater and sediment from seasonal flooding. The water carries a strange smell and the tank still holds moisture from that historic flood years later.
- A team arrives, not one worker
- Price agreed before we start
- Our own pumps and disinfectant
- Rechecked before we refill
What changes about water tank cleaning in Quwaizah
Water in tanks here smells of old algae, and groundwater seeps through cracks in ageing tanks even when it is not raining. For the method itself, see what water tank cleaning involves.
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The first reason
Valleys and floods raise the groundwater table permanently
Quwaizah sits in a valley and hill belt, and groundwater is high, especially after flooding events. Moisture enters old tank walls from below. The tank is never truly dry, and algae and mould grow fast from the constant dampness.
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The second reason
Tank age runs deep and constant moisture corrodes it
The tank may be older than the house itself, and groundwater and past floods have scarred it inside. Rust coats the walls from within, and black mould returns quickly after cleaning because the moisture never stops.
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The third reason
Wadi Al Qaws is close and the 2009 flood left permanent silt and sand
Wadi Al Qaws was the first area hit in the 2009 flood, and the district still carries the marks. Sand and silt settle easily in an old tank, and the water stays cloudy from particles no single cleaning removes.
What water tank cleaning covers in Quwaizah
A very old district in east Jeddah sitting in the hills and valleys zone, managed under Umm Al Salm sub-municipality, and exposed to severe floods in the past, most notably from Wadi Al Qaws.
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Tank checked before we start
Inspection of the old tank starts outside: we check for cracks, constant moisture, the depth of age, and possible lingering effects from past flooding.
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Old water drained out
Complete draining from an old tank in a damp zone takes time, and the first water out carries silt and sand left behind from historic floods.
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Sediment vacuumed from the bottom
Sediment removal from the floor vacuums silt, sand and ancient algae that has settled over years of constant moisture.
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Walls and floor scrubbed
Scrubbing removes black rust and mould that grows fast from groundwater and constant tank dampness.
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Interior surfaces disinfected
Disinfection is critical in old damp tanks, and remains safe to drink even as groundwater seepage persists.
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Final rinse and lid check
Final rinse and lid check ensure water clarity, and the seal is tight to block additional moisture entering the tank.
Not included
- Repairing cracks, leaks or a failed tank wall
- Plumbing, pump or float-valve repair and replacement
- Replacing the tank or refitting a broken lid
- Treating the quality of the water supplied to the tank
How a tank is actually cleaned
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1
Isolate and drain fully
The supply into the tank is shut and the tank is drained completely.
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2
Remove the sediment by hand
The sludge on the floor is scooped and pumped out first.
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3
Scrub walls and floor bare
The biofilm on the walls is physically scrubbed off.
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4
Disinfect the bare surfaces
With the walls and floor clean, a disinfectant made for drinking-water storage is applied and given time to act on every surface.
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5
Rinse and pump clear
The disinfectant and any loosened residue are rinsed down and pumped out, so the first tank of water after us is not carrying it.
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6
Check the lid, then refill with you
We check the cover seal and inlet before refilling, so dust and insects stay out, then start the refill while you watch it run clear.
Quwaizah on the map
Why us for this job in particular
A team, done in one visit
We send a team, not one person, so a tank is drained, cleaned, disinfected and refilled in a single visit rather than left open for days.
We check the cause, not just the tank
We look at the lid seal and inlet, because a tank that got dirty fast usually has a way in.
You watch it refill clear
Nothing is closed until the tank is refilling and you have seen the water run clean.
From our work
Photographs from real jobs carried out by the crew.
The job is not closed before you approve it
The commitment is simple enough to actually keep: we do not leave until the tank is disinfected, refilling, and you have seen it for yourself.
Landmarks of Quwaizah
Quwaizah lies near Wadi Al Qaws on one side and Mareekh Mountains on the other, falling under Umm Al Salm Sub-Municipality. We reach homes from Qais ibn Al Haytham Street or roads near Umm Al Muminin Khadija Mosque, and rooftop tanks sit away from the cracks caused by valley activity.
- Wadi Al Qaws
- Mareekh Mountains
- Umm Al Salm Sub-Municipality
- Umm Al Muminin Khadija Mosque
Questions about water tank cleaning in Quwaizah
The tank is very old and the house sits near Wadi Al Qaws; how often must it be cleaned yearly?
Proximity to Wadi Al Qaws and permanently high groundwater cause rapid contamination. Regular cleaning every few months is far more important here than in districts away from valleys.
Humidity is high throughout the house and black mould keeps appearing in both the bathroom and the tank; is it one problem?
Yes, groundwater and high water table cause mould in both tank and house together. Cleaning removes mould from the tank temporarily, but the permanent answer may be tank sealing or improved ventilation.
Did the 2009 flood cause permanent damage to the tank?
Yes, the flood left long lasting damage. The tank filled with silt and sand, and even years later, groundwater still seeps in through cracks. Regular cleaning will be necessary indefinitely here.
The water smells of old algae even when the tank is clean; where does that come from?
Constant moisture and groundwater contain ancient algae and microorganisms. Cleaning and disinfection remove what is present, but the smell may return if ventilation and sealing do not improve.
The concrete tank is very old and has small cracks; does moisture enter from below?
Yes, cracks in old concrete allow groundwater to seep in from below. This is a main reason for constant tank moisture. The answer may be sealing the cracks or replacing the tank.
Umm Al Muminin Khadija Mosque is very close; is there one large tank or do homes split one tank three ways?
Most homes near the mosque have independent tanks or share with only two or three neighbours. We check tank size and resident count before cleaning, and may recommend more frequent cleaning for shared tanks.
Can you clean a rooftop tank with a small opening?
Usually yes. A tight rooftop unit with a narrow hatch takes more care and time than a wide ground tank, but the cleaning is the same. Access is one of the things we ask about up front so the price and duration are right before we come.
How often should a tank be cleaned?
On a regular cycle rather than once and forgotten, and sooner if you notice grit, a taste or a cloudy tint.
How much does water tank cleaning in Quwaizah cost?
It is set after the inspection, because it follows the size of the job, the materials involved and their condition. Send photos on WhatsApp and we will give you an estimate before we reach Quwaizah.
Other services in Quwaizah
We provide these in Quwaizah too, and more than one can share a single visit.
