Vuna – a world of ideas

We plan and build your water and sanitation system of the future today. From urban to alpine.

About us

At Vuna, we develop decentralized and circular sanitation systems for remote holiday homes and tiny houses, we plan drinking water and wastewater treatment systems for mountain huts, and we generate innovative solutions for circular water management in urban areas. From total wastewater treatment to greywater recycling and rainwater reuse, Vuna has already implemented several (waste)water systems. We also offer nutrient recycling: with the recycled fertilizer Aurin, on the one hand, and with fecal composting, on the other. In the latter, excrements are converted into humus through worm composting, which can be used as a nutrient-rich soil improver. The product range is complemented by drinking water treatment systems that ensure drinking water quality.

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Take a look at our latest work

Lidernenhütte SAC

Planning and construction supervision of a trickling filter system for the treatment of total wastewater as well as sludge treatment beds for the treatment of sewage sludge.

Period: 2022 – 2024
Technology: Trickling filter, grease separator, sludge treatment, substrate filter, worm/substrate filter
Client: SAC Mythen Section
Location: Sisikon UR

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Residential building in Solothurn

Planning and construction support for a drinking water treatment system, vermi- and plant filters for greywater treatment, and dry toilets. The water and sanitation systems are completely self-sufficient.

Period: 2022 – 2025
Technology: Vermi-/substrate filters, plant filters, dry toilets, drinking water
Client: Private
Location: Winznau SO

Zero Waste Space

Planning and construction of plant filters, dry toilets, and drinking water treatment systems to close water cycles in a modular, sustainable construction project.

Period: 2020 – 2023
Technology: Plant filters, dry toilets, drinking water
Client: Muthesius Academy of Fine Arts
Location: Kiel DE

All our projects

Some key information about us:

  • Vuna was established in 2016 in Dübendorf (Switzerland) as a spin-off from the EAWAG research institute.
  • At present, Vuna has realised more than 150 different projects in 8 countries.
  • Vuna brings together specialists in the field of water treatment and recycling technologies.

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Clients

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Years in Business

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Projects

Some of our clients

Our own production

Aurin is the world's first urine fertilizer with full approval by the Swiss authorities. The best solution for your vegetables and flowers.

Officially approved as a fertilizer by the Federal Office for Agriculture (→Product register). After an intensive testing phase that began in 2015, Aurin received final approval in 2018.

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Latest news

12.12.2025

Opening visit to the La Bistoquette housing cooperative

It was a great moment to discover and celebrate circular wastewater disposal on a new scale: around 100…

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03.12.2025

Last chance to register for the PEAK course in January!

An opportunity to learn more about the latest developments in resource-oriented sanitation systems. In the course on January 20, 2026, we will present…

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26.11.2025

Winteregghütte: decentralized wastewater system in operation

Now the Winteregghütte of the SAC section Biel is also up to date in terms of toilets & wastewater.

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Our Mission: Circular Sanitation Systems

Support us in our mission to implement circular sanitation systems in Switzerland and become a member of VaLoo, the network for circular sanitation systems in Switzerland, consisting of people from research and the private sector, as well as committed private individuals and soon you?

Visit VaLoo website

Our partners