Checklist to Prepare Your Water Tank Before Cleaning

When a cistern or water tank cleaning is scheduled, good preparation beforehand makes the difference between a quick, effective visit and a day full of setbacks. While the technical work itself is handled by the professional team, there are several steps the property owner or the residents' association can take care of in advance so the job runs smoothly. This checklist covers the most important points to keep in mind.

Locate and clear the access points. Before the visit, it's worth identifying where the tank's inspection hatch or hatches are and checking that they can be reached without obstacles. If the access is covered by plant pots, garden furniture, overgrown vegetation, or anything else, this is the time to move it. Clear access saves the technician time and avoids damage to nearby objects during the work.

Arrange for the water supply to be shut off or partially drained. In many cases, cleaning requires the tank to be empty or partly empty so the interior can be accessed safely. It's worth discussing with the technician beforehand whether the water supply to the property needs to be cut during the process, and scheduling that cut-off for a suitable time, letting residents know in advance so they're not caught without water partway through the job.

Clear the area around the tank. The equipment used to drain, clean, and disinfect a cistern — hoses, pumps, lighting rigs, containers for sediment — needs room to work. Moving bicycles, tools, plant pots, or anything else cluttering the perimeter of the tank makes the job easier and reduces the risk of accidents during cleaning.

Notify residents or neighbours in advance. For a shared tank supplying several homes, it's essential to inform all residents well ahead of time about the date and expected duration of the water cut-off. This avoids last-minute complaints and lets each household plan around it, for example by storing some water for basic use during the hours the work takes.

Note any known issues to report to the technician. If you've noticed a bad taste, an unusual smell, changes in the water's colour, insects, a lid that doesn't close properly, or any other anomaly, it's worth writing it down and mentioning it when the team arrives. This information helps guide the cleaning toward likely problem areas and can prevent an issue from recurring after the job is done.

Keep safety in mind. The inside of a cistern is a confined space, and cleaning it should always be left to professionals trained and equipped to work in that kind of environment. As the owner, it's enough to make sure the access itself doesn't add extra risk — for example, a damaged lid or a worn access ladder — and to flag it if that's the case.

Following these steps doesn't just speed up the visit, it also leads to a more thorough result: the better prepared the surroundings and the more information the technician has before starting, the more effective the cleaning will be, and the less likely the job will need repeating sooner than expected. At Tuberías y Aljibes we usually go through these points with the client before each visit, precisely so the cleaning day runs without a hitch.