How to fix a water leak

Loss of water in the pool: find the leak and repair it properly

The water in the pool is let in, the bathing season has started and you can look forward to a little refreshment. But suddenly you notice a great loss of water in your pool. No reason to panic. These small leaks and leaks can be easily patched up.

1. Go through the obvious options

Leaks in the pool piping, pool pump or sand filter system are very common. If you suspect a leak, you should ask yourself the following questions:

  • Are there rivulets to be seen?
  • Have puddles of water formed around the swimming pool pump or filter system?

If both are true, there is most likely a leak in the pool pump or sand filter system. In this case, the piping between the swimming pool pump and the sand filter as well as the corresponding screw connections and grommets should be checked. In addition, it is important to check the prefilter cover and all relevant seals on the pool pump.

In the case of pool hose piping, a leak can be identified very easily, as the water would literally splash out. With fixed piping, on the other hand, it is very difficult to determine exactly where the leak is. The source of the error is usually the screw connections. Therefore, all couplings, including those of the ball valves and non-return valves, should be cleaned and then screwed again and, if necessary, the seals checked for small cracks.

2. Check pool liner

If the points mentioned above are excluded, the pool liner must be checked. Small holes or scratches are often to blame for the water loss. To check whether there is a leak, you have the following options:

Detect water loss by marking

Use adhesive tape to mark the water level on the pool liner. If the pool has lost more than 6 mm of water after 24 hours, there is a leak. The usual water loss through evaporation is below this value.

Detect water loss by means of a bucket test

With this test method, you place a bucket filled with water and weighed down by a stone or brick on a step in the pool. Make sure that the water level in the bucket is just as high as in the pool. Now mark the water level on the bucket both outside and inside with a waterproof pen. Check the marking after 24 hours. If the pool water has sunk well below the water level in the bucket (more than 6 mm), it can be assumed that there is a leak in the pool liner. Do this test with the pool pump switched on and then again with the pool pump switched off.

3. Locate the leak

Now it has to be determined where the leak is on the foil. To do this, switch off the filter system and let the pool water sink until it comes to a standstill. The leak can then be searched for along this line. So go into the pool and check the foil thoroughly.

4. Seal the leak properly

Once the leak is found, it can be easily sealed - even underwater. All you need is a pool liner repair set. It contains foil material and a special underwater adhesive.

To seal, cut out the foil patch generously (approx. 5 cm larger than the damaged area) and round off the corners so that they cannot come loose. Then apply a thick layer of the glue on the patch. Affix the piece of film to the area to be repaired as quickly as possible. Then wipe away the air and excess glue towards the edge of the patch and press on for 30 seconds.

Alternatively, the leak can also be repaired when it is dry. To do this, thoroughly clean the film area around the hole and cut the appropriate piece from the repair patch, as described above. Apply the special adhesive to the foil patch and let it dry for approx. 2 - 4 minutes. Now place the patch on the hole and press it on firmly. After approx. 12 hours of drying time, the pool can be refilled with water. Now nothing stands in the way of bathing fun.

Your POOLSANA team