How is a natural swimming pool constructed?

Natural swimming pools, also known as biopools, offer a refreshing alternative to traditional chlorine-treated pools. These eco-friendly systems rely on natural processes and biological filtration to maintain clean and healthy water. If you’re considering the beauty and sustainability of a natural pool, understanding the construction process is crucial. This guide delves into the key steps involved in building a natural swimming pool, from planning and excavation to planting and finishing touches.

Planning and Design:

  1. Assess your space: Evaluate your available space, considering factors like sun exposure, drainage, and proximity to existing structures.
  2. Consult professionals: Collaborate with experienced designers and contractors specializing in natural swimming pool construction. They can help you determine the optimal size, shape, and design elements within your budget and space limitations.
  3. Permits and regulations: Research and obtain any necessary permits and approvals from your local authorities before starting construction.

Excavation and Construction:

  1. Excavation: Based on the design plan, professionals will carefully excavate the designated area for the pool.
  2. Liner installation: Unlike traditional pools with concrete or plaster finishes, natural pools often use a specialized liner made from durable materials like clay or geomembrane. This liner acts as a barrier to prevent water loss and provides a foundation for the biological filtration system.
  3. Creating the regeneration zone: This dedicated zone, typically around 30-50% of the pool’s surface area, is separated from the main swimming area by a barrier. It houses aquatic plants and gravel, acting as a natural filter to purify the water.
  4. Plumbing and filtration systems: Install a circulation system that pumps water from the main pool through the regeneration zone and back, facilitating the natural filtration process.
  5. Skimmer and bottom drain: Install a skimmer to remove floating debris and a bottom drain to collect any settled dirt or leaves.

Biological Filtration and Planting:

  1. Gravel and substrate: In the regeneration zone, fill the designated area with specific gravel or substrate layers to promote healthy bacterial growth and efficient filtration.
  2. Planting aquatic plants: Select and strategically plant appropriate aquatic plants in the regeneration zone. These plants absorb nutrients, provide oxygen, and contribute to the overall aesthetic appeal.

Finishing Touches and Maintenance:

  1. Filling the pool: Once construction is complete, the pool can be filled with water. Natural pool water may require initial balancing of pH and mineral levels.
  2. Ongoing maintenance: Regular maintenance is essential for the proper functioning of a natural pool. This includes skimming debris, monitoring water quality, and ensuring proper pump and filtration system operation.

Benefits of Natural Swimming Pools:

  • Eco-friendly: Natural pools utilize natural filtration processes, eliminating the need for harsh chemicals like chlorine, making them a more environmentally friendly option.
  • Healthier swimming experience: The absence of chlorine can provide a gentler experience for your skin and eyes, especially for individuals with sensitivities.
  • Aesthetically pleasing: Natural pools often incorporate aquatic plants and landscaping elements, creating a visually appealing and natural-looking swimming experience.
  • Low maintenance: While some ongoing maintenance is necessary, natural pools generally require less frequent and intensive maintenance compared to traditional chlorine-treated pools.

Considerations before Building a Natural Swimming Pools:

  • Initial investment: Compared to traditional pools, natural pools may involve a higher initial investment due to specialized materials and design features.
  • Learning curve: Understanding the natural filtration process and maintaining the biological balance in the pool may require some initial learning and adjustments.
  • Seasonal variations: Natural pools may require adjustments to the maintenance routine depending on seasonal changes, such as managing plant life during winter months in certain climates.

Building a natural swimming pool offers a unique and eco-friendly approach to creating a backyard oasis. Understanding the construction process, its benefits, and the considerations involved empowers you to make an informed decision and embark on this exciting project. Remember, consulting with qualified professionals and carefully considering your specific needs and preferences is key to creating a natural pool that reflects your vision and provides years of enjoyment in harmony with nature.


This post was written by a professional at Pool Stop Custom Pools. Pool Stop has been building custom swimming pools in DFW area for over 20 year now. We has been consistently voted “Best Pool Company” in Rockwall by Living Magazine and its readers year after year. Our goal is to provide the community with the best design and construction technology available. Our team consists of the best and most educated professionals in the industry, across the board. Pool Stop offers a variety of services: New Pool Design & Pool Construction, Retail Pool Store, Pool Supplies, Water Testing, and Pool Cleaner Repair. Stop by today for a FREE Water analysis.