Putting a swimming pool back into service after wintering: 10 essential steps


Swimming season is just around the corner and for the happy, happy pool owner that you are, now is the time to get it back on track. You know for a fact that running fresh water in your pond doesn’t work. Here are the 10 steps of this famous spring cleaning so that you can do the best.

1 – start cleaning at the right time

As soon as the outside temperature rises, the water that has remained in the pool during the winter also heats up. This creates a breeding ground for algae and bacteria. As soon as the water temperature reaches between 12 and 15 degrees, you can stop wintering and put your pool back in water.

2 – Remove the winter cover

If your pool is not covered year round, but has a winter cover. Take it off. Remove the water accumulated on its surface using a pump. And clean it: avoid storing a dirty and damp cover so as not to have unpleasant surprises in the fall.

3 – Remove surface dirt

Most of the time, leaves, twigs, insects and other impurities have accumulated on the surface of the water and on the bottom of the pool during the winter. In order to prevent the pool drain from becoming clogged when it is started up, you must remove this debris. The best way to do this is to use a landing net. In addition, you can of course also use special vacuum cleaners or pool robots to clean the bottom of the pool. If the water is dirty with algae, you can add a suitable anti-algae agent to the pool before lowering the pool water level and let it act for 24 hours. The mechanical removal of algae is then much easier, or even no longer necessary.

4 – Eliminate dirt thoroughly

Since organic residues often settle in the corners of the swimming pool, it is advisable to put the filtration system in circulation for a few minutes. Take care that the accumulation of dirt does not obstruct the pool filter.

5 – Drain the pool water

Once all the impurities have been removed, adjust the water level. Be careful not to flood your property. In the case of swimming pools with liner, carefully monitor the water level in the swimming pool in order to avoid wrinkles in the liner. Quickly fill the basin after you have drained it.

6 – Clean the bottom of the pool

Take advantage of having emptied part of the pool to carefully clean its floor with a sponge, a brush, or even a high pressure cleaner or garden hose. This removes lime deposits but also algae. If you are using a pressure washer, be very careful not to damage your pond. If in doubt, check with specialist stores. Their staff will tell you that conventional cleaning products are strongly discouraged. It will give you the right maintenance product for your pool: you can also go to the store with a sample of your water. This will be analyzed on site and you will then be given the appropriate product. Once you get home, rub the bottom of your pool evenly. Leave on for five to ten minutes. Rub again and rinse thoroughly

7 – Prepare the technical equipment

After the basic cleaning, you must check the technical equipment of your swimming pool, clean it thoroughly and replace it if necessary. Reinstall all hardware that was disassembled during winter storage. Check the pool pump, skimmer and supply lines. Check and clean the plug and float. Check the seals for cracks. Check the non-return valves for stubborn dirt and their proper functioning. Check the filtration system.

8 – Fill the pool again

Then you can start to fill the pool. During the filling process, you need to check the lines several times. Then fill and activate the filter pump, washed well.

9 – Treat the water if its pH is not good

To ensure the cleanliness of the swimming pool during the summer, the chlorine content and the pH value must be correct. The recommended pH value for a swimming pool is between 7.0 and 7.4. In case of deviations, special pH reducers and pH boosters can allow you to optimally adjust the water. Likewise, the optimum value for chlorine is between 1 and 3. If you get a reading less than 1, you need to add water.

10 – Carry out a shock treatment with chlorine

In order to avoid possible contamination of the freshly introduced water, you can perform a shock cleaning with chlorine. Shock chlorination is a short-term overdose of chlorine to prevent algae infestation from the start. The pH of the pool water must be exactly 7.2 for shock chlorination to work. If possible, the pool water should not be heated, but should have a temperature above 15 degrees. Rinse the filter thoroughly and switch it on. Add rapidly dissolving chlorine tablets, chlorine granules or liquid chlorine preparations to the water until the chlorine content reaches 3-5 milligrams / liter. Check the rate with the test strips. Let the filtration system run as long as possible, check the chlorine content of the water again and again and add more if necessary.