Let nature clean the water…
Chemical-free water garden and swimming pool. The plant portion, or regeneration zone, is separated from the swimming area by the wall seen a few inches below the water’s surface. naturalswimmingpools.co.
The pools have skimmers and pumps that circulate the water through the regeneration zone and back into the swimming area. The aquatic plants filter out contaminants and use nutrients from the water as food, which helps prevent algae. Then rocks, such as granite river rock or haydite, to which friendly bacteria attach, act as biological filters. More questions answered at gartenart.co.uk
There are many design options. Beneficial bacteria (micro-organisms and microbes) colonize the rock and help cleanse the water. (clear-water-revival.com)
This video from natural pool expert David Pagan Butler is an introduction to what he calls “wild swimming at home.” His pool or pond costs a fraction of traditional construction. It requires no special contractor to do any of the work. And no chemicals are needed to keep it clean.
In the video, he shows his homemade innovations: insulating the swimming zone to keep it warm, building a noiseless pool filter from scratch, and the solar-powered circulation system. The wall of the pool is made of sandbags and wood. Beyond is the “planting zone,” which is an equal area to the “swimming zone.” Animals and plants in this zone act as natural filtration to keep the water clean.
A gradual slope contains the plants, gravel, and loamy sand, a wall keeps them separate from the swimming area.
Vacuum but twice a year and tend to the plants as needed. The plants will need to be cut back in the fall so they do not die in the pool. (naturalswimmingpools.com)
The regeneration zone can be along the perimeter of a natural pool or a pond unto itself, as long as it’s connected to the swimming area. (gartenart.co.uk)
For a true natural pool with no help from ultraviolet light or other such technology, the requirement is a half-swimming area and a half-regeneration area. (Originally found at biotop-natural-pool.com)
Plants steal the nutrients away from invasive algae. (gartenart.co.uk)
This time-lapse video shows the construction of a natural pool on Nantucket Island, off of Cape Cod. Once the barriers of the pool are staked out, a machine digs out all the dirt. Then the liner is laid around a temporary wood frame. A barrier is built to separate the swimming area from the natural plants’ area, and forms laid out for the pouring of concrete.
The sides and bottom of the pool are concrete. Once the concrete is poured, the forms are removed. The filtration and water pumps are arranged. The earth is filled in around the pool, and stones are placed along the exterior for a more natural look. A lining is applied to the bottom and sides of the pool. Then, it is slowly filled with water. At the end of the video, the final product is shown with the landscaping. Beautiful.
20 Amazing Natural Pools
There are so many different ways to incorporate a natural pool into your yard, whether it is a clean-cut modern style or an aesthetic natural design.
1) Hidden Oasis
Half regeneration area, half swimming pool (living-pool.eu)
2) Woodhouse Demonstration Pool
Natural predators such as water striders and dragonflies will come to live in the enrichment area and feast on mosquitoes. If you chose to have a skimmer installed this will keep mosquitoes in check as well. Woodhouse demo pool from naturalswimmingpools.com.
3) Oxfordshire Natural Pool
Use your pool as an ice rink in winter, as there is no need for a cover. (gartenart.co.uk)
4) Clear Water Revival Pool
A first year pool will need at least 60 days to self-adjust, but installing an ultraviolet sterilizer in the pump area will have you swimming almost immediately. (clear-water-revival.com)
Andy Marsh of Georgia shows off the natural pool he built. He says he did all his research online. His pool is lined with gravel, the water circulates through the gravel, and microbes in the gravel help filter it. It looks really clean! He shows the divide between his swimming area and planting area.
As he’s in Georgia, with a warm climate, his planting area is the same size as his swimming area (in colder places you might get away with a smaller planting area). Under everything is a rubber membrane. Most of the stone lining the pond is a gray granite he was able to get 10 tons of for $300! He used 18 tons of gravel for the pool.
5) French Natural Pool
Note the plant pond to the right in the natural pool in France. (bioteich.fr)
6) Natural Swimming Pool Ecological
The pools are most popular in Austria, where a company called Biotop has been designing them for residential and public use since 1986. (homeexteriorinterior.com)
7) Two-Tiered Pool
The two-tiered waterfall helps oxygenate the pool. (naturalpoolsnz.com)
8) Cottage At Home Pool
Though this project was difficult for the builders, the end result is truly breathtaking! Combining the aesthetic of a pond with the functionality of a natural swimming pool.
9) Hybrid Natural Pool
A hybrid natural pool usually has two circulation pumps. One where water is circulated through the plant and rock filters before being discharged back to the bottom of the pond. The second surface circulation system pulls water through one or two skimmers filtering out floating debris. Water drawn through the skimmers passes through a filter system, such as a UV filter and/or a biofilter—essentially a box filled with bacteria-laden bio-media—before returning to the pool. A waterfall helps with oxygenation. (naturalswimmingpools.co.za)
This natural swimming pond was built in Central Illinois, along with 400 meters of hugelkultur beds—in just 10 days! The walls of the pool are giant cinder blocks, with tamped sandbags adding extra height. Gravel was poured along the sides of the pool for future landscaping.
The designer, Zach Weiss, explains that adding oxygen is very important for natural pools, so he built in a waterfall, fed by a water circulation device. The stones blocking the water also help release oxygen. The material Zach excavated to form the pool, he used in the hugelkultur bed. No waste! The property is going to be a bed and breakfast.
10) A Sustainable Homestead Natural Pool
This homestead pulled out all the stops, including a natural pool to their sustainable property.
11) A Gesamtkunstwerk Natural Pool
Love the deck amongst the water plants. An original Biotop pool (biotop-natural-pool.com)
12) A Large Natural Pool
Access through an enrichment area. (clear-water-revival.com)
13) Natural Pool For Demonstration
Love the diving boards. (naturalswimmingpools.com)
14) English Natural Pool
In this English backyard, the modern design of the natural pool steals the show.
15) A Long Natural Pool
Natural pool in the UK. (clear-water-revival.com)
16) Pierce Lanucha Swimming Pool
These designers used a large regeneration zone to create a beautiful waterscape.
17) Castle Rock Natural Pool
Convert a pond into a swimming pond. Mother Earth News says there are a few options for liners—bentonite clay to seal the soil or a synthetic liner. If you choose synthetic, they recommend ethylene propylene diene monomer rather than PVC. (gartenart.co.uk)
18) Growing Plants For Regeneration Zone
Close up of a pond built by Biofermenta.
19) Building Up The Natural Wall
Western Massachusetts Water House Pools (waterhousepools.com)
20) Construction Of A Natural Pool
New free-form construction. (clear-water-revival.com)
How To Convert A Traditional Pool To A Natural Pool
See pics of a conversion process here: clear-water-revival.com
Conversion with an added beach. bionovanaturalpools.com
Here is a conversion in Australia from a 1980s style brick-pool to a natural pond. The conversion was done by the homeowner, but with help from the company that produced the video. He explains that the “power-hungry” pumps of traditional pools are replaced by low-power pond pumps. They used the existing skimmer box to run lines for circulation and to add oxygen.
Even in the offseason, the water quality stays good. They don’t have to pump chemicals in to keep it clean in winter. The pond has biofilters that are incredibly clean even after 18 months of use. The equipment is small and practically noiseless. Low maintenance and self-sufficiency = inexpensive and simple life.
Plants For Your Natural Pool
Every pool needs to be cleaned. A natural pool is cleaned with plants instead of chemicals—have you ever thought about how many pounds of chemicals go into a typical swimming pool?
A range of aquatic plants is used—submerged (oxygenators), floating, shallow marginals, deep marginals, bog/marsh, and waterside species. Whenever possible, use indigenous plants. Some examples of typical water plants: cattails, bulrushes, sedges, duckweed, and water lilies.
How To Build A Natural Swimming Pool
- Schwimmteich-Selbstbau: this article has many links embedded within, giving you even more resources then the article itself. The site is in German, but there is an option to translate the information.
- Woodhouse Natural Pools: If you don’t know where to start, this site has a lot of pictures for inspiration.
The Best Natural Swimming Pool Books
- Natural Swimming Pools: Inspiration For Harmony With Nature by Michael Littlewood
- How to Build a Natural Swimming Pool by Wolfram Kircher and Andreas Thon
- Garden Pools and Swimming Ponds Design, Construction, and Landscape by Richard Weixler
Natural Pool Builders
If you don’t have the time to make your own natural pond, you can hire one of these companies to help!
Natural Pool Builders in Europe
- Biotop has been in business since 1984 with more than 3,500 satisfied customers. Their partner network covers 17 countries. (Austria)
- BioNova is a global network of partners on 6 continents who work synergistically to push the state-of-the-art of natural swimming pool design, construction, aesthetics and maintenance. (Germany)
- Bioteich Baignades Naturelles (France)
- GartenArt has naturalistic options, making swimming ponds for your enjoyment. (United Kingdom)
- Woodhouse Natural Pools with BIOTOP have been developing and building naturally filtered swimming pools in the UK since 2000. (United Kingdom)
- Clear Water Revival are builders who also sell kits to the more daring. (United Kingdom)
Natural Pool Builders In The US
- Total Habitat works with all kinds of clientele, including contractors, individuals, and zoos. (Kansas)
- Expanding Horizons not only constructs pools, but can remodel your pool as well. (California)
- Water House Pools will help you design your natural pool, even managing the construction. (Massachusetts)
- Rin Robyn Pools can build a relaxing natural pool, building for both individuals and spas. (New Jersey & MA)
- Kane Brothers, make beautiful swimming ponds, they can also be hired for maintenance. (Illinois)
Natural Pool Builders In Canada
- Tumber & Associates Landscape Consultants have been around for 40 years, giving you expert service. (Ontario)
- Genus Loci Ecological Landscapes work with the land to make your ideal natural pool. (Ontario)
Natural Pool Builders In Oceania
- Natural Pools and Landscaping NZ will make sure that your pool is not only natural, but stylish. (New Zealand)
Natural Pool Builders In Africa
- EcoPools have many great designs, ranging from modern to urban styles. (South Africa)