How to Clean a Water Tank at Home
Clean a water tank by draining it, scrubbing the interior, sterilizing the surfaces and refilling it safely. Regular cleaning keeps stored water free of sediment, algae and bacteria buildup.
Roof and ground tanks in Riyadh accumulate sediment and mineral scale from the water supply over time, which affects water taste and, if left too long, hygiene. A full clean, not just a rinse, is needed to remove buildup properly.
Step-by-Step: How to Clean the Tank
- Shut off the water supply — Close the inlet valve to the tank and let the water level drop by using it down or draining it through the outlet.
- Drain the tank fully — Open the drain valve or use a pump to empty the remaining water completely from the tank.
- Scrub the interior — Use a stiff brush and a mild, tank-safe cleaning solution to scrub the walls and base, removing sediment and algae buildup.
- Rinse thoroughly — Rinse the tank several times with clean water until no cleaning residue or loose sediment remains.
- Sterilize the tank — Apply a food-grade sanitizing solution to the interior surfaces and let it sit for the recommended time before a final rinse.
- Refill and check the fittings — Refill the tank and check the float valve, inlet and outlet connections for leaks before returning it to normal use.
Safety Notes
- Ensure good ventilation if cleaning an enclosed roof tank
- Use only food-grade, tank-safe cleaning products
- Check the tank shell for cracks or damage while it’s empty
When to Call a Professional
For a tank that’s difficult to access, heavily built up, or shows cracks or leaks once drained, water tank cleaning handles the full clean, sterilizing and any needed repairs safely.