If your pond liner starts leaking in a natural swimming pond, you don’t necessarily need to replace it right away. Small leaks can often be repaired without draining the whole pond. You can use a patch kit designed for your specific liner material, like EPDM or RPE, to cover the damaged area.
The process is simple: clean and dry the area around the leak, apply the adhesive, and press the patch firmly into place. As long as the damage is minor, this fix can save you time and money. However, if the leak is larger or in a spot that's hard to reach, it might be worth considering a professional repair or, in extreme cases, replacing the liner.