Water tank sterilization in Harat Al Sarahin Jeddah
Harat Al Sarahin is one of the oldest quarters of Thuwal, with traditional mud-built and popular houses maintained and passed between related families. Clustered family residential compounds share water sources and sometimes tank systems. Tanks here are very old, walls are weak and internal moisture runs high.
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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 Sarahin
Old and mud-built houses retain very high internal moisture, and their tanks develop thick layers of algae and internal dampness. The method is set out in full on Water tank sterilization in detail.
Very old mud and stone tanks
Traditional mud houses contain tanks built from stone and clay as part of the original structure decades ago. These materials leak slowly and retain permanent moisture even after cleaning.
Internal moisture from mud walls
Mud walls draw moisture from the ground and air year-round. Tanks adjacent to these walls become saturated from constant seepage, speeding algae and fungal growth.
Shared water lines among clustered houses
Close-built family compounds sometimes share water lines and common tank systems. Problems in one tank can spread to neighbours, and sterilization requires coordination between households.
Harat Al Sarahin on the map
Harat Al Sarahin sits about 0.5 km from Harat Al Baharah and about 0.5 km from Harat Al Amir.
Open in Google MapsWhat we read inside the tank before anything starts
An old quarter in Thuwal with mud-built and traditional houses, inhabited by close and extended family groups. Houses follow the pattern of old coastal villages where dwellings cluster tightly around shared courtyards.
Sediment on the floor
Thick algae and silt deposits coat the floor and walls from constant internal moisture coming from the surrounding mud walls.
The slime film on the wall
The biofilm layer on the stone tank walls is old and very thick and needs strong removal, sometimes requiring special tools.
Light and heat
The tank floor holds heavy deposits of clay, salt and old moisture that have not moved in years.
The lining and any cracking
Moisture in mud houses is very high year-round and even after cleaning the tank re-dampens quickly from the surrounding walls.
The lid and the openings
Old mud and stone tanks may contain deep cracks and cavities inside the walls that trap moisture and sediment.
What shows up at the tap
Pipe runs from the tank may be made of old stone or ancient copper and are fragile; flushing requires moderate pressure.
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.
The character of Harat Al Sarahin
Mixed district: shops at street level with homes above them
Traditional and old mud-built houses mean tanks are made from old and weak materials with constant seepage. Treatment must be careful not to damage brittle materials and requires more frequent visits because internal moisture returns quickly.
Questions about this district
Why do tanks in old mud houses need cleaning more often than modern ones?
Mud and stone materials leak water and retain permanent moisture. Constant moisture feeds algae and fungi much faster than modern tanks.
Does leakage from the mud tank wall affect water quality?
Yes, leakage draws in soil debris and external moisture. Sterilization needs more frequent repetition and tank re-lining may be needed in severe cases.
Does sealing cracks in the mud tank solve the moisture problem?
It may reduce it, but will not solve it permanently in mud houses. The mud walls themselves provide ongoing moisture around the tank.
Do shared tanks between families need different treatment?
Yes, a shared tank needs agreement from all families on sterilization timing. Stronger treatment may be needed if usage is high.
How do we handle heavy sediment in the floor of an old tank?
Deposits in old tanks are dense and need deep scraping and manual removal. Water pressure alone may not remove all sediment.
Do mud houses need special treatment for the pipe network?
Yes, old pipes in mud houses may be stone or ancient copper. Flushing requires care not to damage brittle pipes.
How much does water tank sterilization in Harat Al Sarahin 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 Sarahin.
Nearby districts we cover
Other services in Harat Al Sarahin
Other services we provide to residents of Harat Al Sarahin.
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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 Sarahin? Tell us what you saw and we will tell you what it needs
We reach Harat Al Sarahin at a time we agree, and you get the full cost before we start.