Tank Contamination Worries in Jeddah: What to Do After a Leak, Flood or Backflow

Until the tank has been inspected, assume the water is not fit for drinking, cooking, brushing teeth or washing food. Use bottled or other water from a trusted source for these purposes.

Washing and toilet use can often continue at your own discretion, but if there is a strong smell or visible dirt you may prefer to limit use until the tank is checked.

Tell everyone in the house or building, including tenants and staff, so no one drinks from a tap out of habit.

Close the inlet valve so more water does not enter, and note the water level. Take photos of the lid area, the room, the floor and any damage. This record helps with repairs, insurance conversations and landlord discussions.

Do not drain the tank without a plan. Draining the water to a safe point, away from people and drains that could back up, is part of the work the cleaning team organizes.

Write down the time of the event and when you first noticed a change. It helps the team judge how far contamination could have spread.

Cleaning a tank without fixing the entry point only invites the same problem. Check the lid seal, the vent screen, the overflow pipe, the tank walls and the room drainage.

An overflow or vent pipe that ends near a drain or low point can pull dirty water back in when pressure changes. Fittings that look minor can be the cause.

If you cannot find the entry point safely, say so when you book. The team can inspect while the tank is empty.

The tank is emptied safely, the floor and walls are scrubbed to remove silt, organic film and residue, then rinsed thoroughly. Dirty rinse water is removed, not left in the tank.

Fittings such as the float valve and inlet are inspected, and damaged parts are flagged for repair. Disinfection follows according to professional practice, with proper rinsing and handling of any chemicals.

Do not mix household chemicals in a tank yourself. The wrong combination can be dangerous, and tanks are confined spaces.

The tank is only part of the system. Pipes, home filters, water heaters and rooftop lines may carry residue after an event.

After the tank is cleaned and refilled, run taps for a while, replace filter cartridges if they were exposed, and watch the water for color and smell over the next days.

Our guide on tap water color, smell and taste explains how to tell whether a recurring problem comes from the tank or from the pipes.

Refill only after the entry point is fixed and the tank has been cleaned and rinsed. Let the first fill settle, then check color and smell before using it for drinking.

If anyone is unwell, or the event involved sewage, follow the guidance of the relevant health and water authorities. They can advise on testing, and an accredited laboratory can test a sample if you need a result.

We clean tanks. We do not claim to certify water quality, and this guide is general information rather than medical or legal advice.

Seal and raise vulnerable fittings where possible, keep the tank room drains clear, make sure the overflow and vent are screened and positioned away from low, dirty points, and check the room after heavy rain.

Add the tank to your regular inspection routine and keep photos of its normal condition. Changes are much easier to spot when you know what normal looks like.

Choose a cleaning interval that reflects your tank location, exposure and use, and shorten it after an incident.