Water tank sterilization in Harat Al Sawalhah Jeddah
Harat Al Sawalhah is a traditional old quarter in Thuwal inland from the shore and harbour. Homes sit on narrow streets now asphalted and lit under the Thuwal development programme. Tanks here suffer from coastal humidity despite the distance from open water.
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Potable-rated materials
Linings and disinfectants cleared for drinking water tanks, not general-purpose products.
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You get the downtime first
How many hours the tank is out of service, told before we start rather than after we finish.
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A first-draw flush
We run the first draw off after refilling, and the tank is not handed back until the water runs clear.
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Ground and roof tanks
Villas, apartment blocks and premises that need a written record of each visit.
Why the job is different in Harat Al Sawalhah
Traditional old homes here contain small confined tanks, and narrow streets make it difficult to access tanks with large cleaning equipment. The method is set out in full on what Water tank sterilization involves.
Confined tanks in cramped traditional houses
Old traditional homes have tight gaps between walls. Tanks are trapped under ceilings or in narrow corners, making access very difficult.
Narrow asphalted streets built recently
The quarter was developed under the Aramco programme and streets are asphalted but very narrow. Large vehicles cannot enter and equipment must be hand-carried.
High internal humidity and poor air flow
Narrow streets and tightly packed homes cause very high humidity and poor air circulation. Tanks dry slowly and algae thrive.
The character of Harat Al Sawalhah
Mixed district: shops at street level with homes above them
The quarter is traditional and old with very narrow streets and tightly packed homes. Tanks are confined in tight spaces hard to access and large equipment cannot enter. Treatment requires hand-carrying equipment and must focus on internal humidity rather than sea salt.
What we read inside the tank before anything starts
A traditional old quarter in Thuwal with narrow lit and asphalted streets, inland from the seashore, harbour and corniche, developed under the Thuwal programme run by Saudi Aramco alongside university construction.
Sediment on the floor
Sediment and algae build up due to high humidity and poor air flow in narrow streets and tightly packed homes.
The slime film on the wall
Bacteria and brown algae flourish on walls due to humidity, stagnant water and very low air circulation.
Light and heat
Tanks confined in tight corners are very hard to access, wash and clean thoroughly.
The lining and any cracking
Internal humidity from narrow streets and packed homes causes wall cracking and slow corrosion.
The lid and the openings
Sediment collects on the floor due to stagnant water and poor air flow. It may contain more algae than mineral deposits.
What shows up at the tap
Remote taps and lines may hold heavy algae and sediment due to stagnant water and humidity.
How we work
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1
Inspect and record the condition
We open the hatch and work through what the tank is made of and how big it is, how deep the sediment lies, the state of the lining, whether the lid and the overflow seal, and whether there is a crack that has to be repaired before any sterilizing.
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2
Drain and lift the sediment out
The water goes out, then the silt and sand are lifted off the floor by suction rather than pushed toward the outlet, because pushing them sends them into the house pipework and the heater.
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3
High pressure wash
Walls, floor, corners and the area around the outlet, until the slime film is completely gone. This is the step that makes the sterilizing after it mean anything.
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4
Sterilize, rinse, then return to service
The sterilizing agent goes onto the walls, the floor and the underside of the lid and is left for its contact time, then we rinse, refill and run the furthest tap until the whole line is clear.
What water tank sterilization includes
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A recorded inspection
Material, capacity, sediment depth, the state of the lining, the lid and the overflow, all before any work begins.
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Draining and sediment removal
The water out, and the silt and sand lifted off the floor instead of being pushed into the outlet and the house pipework.
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High pressure washing
Walls, corners and around the outlet, until the biofilm that no disinfectant penetrates has gone.
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Sterilizing the internal surfaces
A sterilizing agent meant for drinking water tanks, applied to the walls, the floor and the underside of the lid, and left for its contact time.
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Line flush and aftercare
Rinse, refill and a flush from the furthest tap, when the water is usable again, and what to change in the filter afterwards.
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The next cycle
We agree the right interval for your tank from how it is filled, how much sun it takes and the condition of the lid.
What is different about Thuwal Sub-Municipality
Thuwal sub municipality is a small fishing town on the Red Sea coast at the far northern edge of Jeddah governorate. Its old quarters are closely packed popular and mud built houses on narrow streets, with newer low rise concrete homes from the town's development programme beside them. Sea humidity stays high all year, the fishing harbour and the corniche form its seafront, water arrives by tanker so household tanks are everywhere, and the town sits on Wadi Thuwal, ringed by open ground and by the irrigated green campus of King Abdullah University of Science and Technology.
Questions about this district
Why are Sawalhah tanks hard to clean despite being far from the sea?
The streets are very narrow and homes tightly packed, causing high humidity. Tanks sit in cramped spaces and are hard to reach with cleaning equipment.
Do small tanks need more sterilization or less?
They may need it more often because stagnant water in a small tank fouls faster. But the volume of sterilizing agent used is smaller.
What causes high humidity in tanks despite the distance from the sea?
Narrow streets, tightly packed homes and poor air flow. Little sea breeze reaches into the quarter's interior.
Can a tank be moved from a tight corner to a better location?
It may be possible but requires plumbing rework and may be costly. The corner position is traditional for homes here.
Are exposed tanks better than covered ones in Al Sawalhah?
Covered tanks are much better here because they reduce humidity entry. But poor air flow remains a problem.
How often should tanks be cleaned in Harat Al Sawalhah?
Twice yearly is enough if the tank is covered. If open, three times yearly is better because humidity causes faster fouling.
How much does water tank sterilization in Harat Al Sawalhah 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 Harat Al Sawalhah.
Nearby districts we cover
Other services in Harat Al Sawalhah
Other services we provide to residents of Harat Al Sawalhah.
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Water tanks
Water tank cleaning
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Water tanks
Water tank sealing
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Water tanks
Tank leak repair
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Residential
Cockroach control
Need water tank sterilization in Harat Al Sawalhah? Tell us what you saw and we will tell you what it needs
We reach Harat Al Sawalhah at a time we agree, and you get the full cost before we start.