Swimming pond technology - naturally clear water without chemicals
A natural swimming pond cleans itself. Instead of chlorine, plants, microorganisms, and sophisticated technology take care of the water purification. This creates a lively, clear bathing body of water that blends harmoniously into your garden.
The interaction between the swimming zone and the regeneration zone is central to this: while you swim in one and enjoy the warm days, the other ensures the water quality in the background – entirely without pumping noise or chemical smells. This way, your swimming pond remains a complete, living ecosystem for years to come, evolving from season to season.
The planted regeneration zone
The heart of a classic swimming pond is the regeneration zone, clearly separated from the actual swimming zone. Aquatic plants such as water lilies or reeds root in a special substrate, where beneficial bacteria settle in their root system. Together, they break down nutrients that would otherwise be needed for algae to grow – the water remains in natural balance. The more balanced this equilibrium, the clearer the water.
The regeneration zone is more than just technology: it can become a habitat for dragonflies, small fish, or newts, and turns the swimming pond into a complete, living ecosystem in your own garden. Key building blocks include:
- Substrate and planting – contribute to the biological purification performance
- Pond liner and fleece – ensure permanent sealing, even in the long term
- Water circulation – moves the water between the swimming and regeneration zones and prevents stagnant areas
If necessary, this natural system can be supplemented with quiet, energy-saving filter technology - for example, with heavy use or when particularly clear water is desired. This often allows for a more compact design of the regeneration zone in relation to the swimming area.
And if I don't want a planting zone?
If you’d prefer not to have a planted regeneration zone but still want chemical-free – and therefore chlorine-free – water, our Living Pool technology offers the perfect solution: it replaces the plants with an intelligent filter system and looks just like a traditional swimming pool. You can read about how this technology works in detail on our website Natural pool and bio-pool.
Swimming pond or natural pool – which is right for you?
Both options do not require any chemicals, but differ in their overall appearance: the swimming pond relies on its regeneration zone and has a natural look, whilst the natural pool – or Living Pool – purifies the water purely through its technology and looks like a conventional swimming pool. Which solution is right for you depends on the space available, your design preferences and your expectations regarding maintenance. We’d be happy to advise you and work with you to find the right solution for your garden. Once you’ve decided on a swimming pond, we’ll support you throughout the New swimming pond construction from the first spade of earth.
Still unsure which pool type is right for you? In our Large pool comparison See all the differences at a glance.
Frequently asked questions about swimming pond technology
How does a swimming pond work without chemicals? Plants and bacteria in the regeneration zone break down nutrients that would otherwise be needed for algae to grow. This keeps the water clear naturally, without any chlorine.
What is a regeneration zone? A planted area of the natural swimming pool, clearly separated from the swimming zone, where aquatic plants and bacteria purify the water while simultaneously creating a habitat for small animals.
What is the difference between a swimming pond and a natural pool? The swimming pond has a planted regeneration zone and has a natural look, whilst the natural pool – or Living Pool – does not require a planting zone and looks like a traditional pool. You can find details of the Living Pool technology on our website Natural pool and bio-pool.
How much upkeep does the technology require? A swimming pond is low-maintenance thanks to natural purification. Read about the work involved in Section Care and maintenance.
Can natural technology be supported if needed? Yes. The natural system can be supplemented with additional, energy-saving filter technology if required – for example, with heavy use or if the regeneration zone needs to be designed more compactly.
