The future is decentralized

aesthetic and process-stable
water and wastewater purification

Since 1993, we have been designing, building and servicing constructed wetlands, natural swimming pools and rainwater treatment plants. With our interdisciplinary team, we create unique wastewater solutions with reliably high purification performance. On top of that our systems beautify the settlement. As a result, water can once again be experienced in its full meaning and municipalities save considerable costs on the sewer network.

Constructed wetlands

Constructed wetlands reliably and cost-effectively treat commercial and domestic wastewater, both in combined and separate sewage networks. Our oldest plant shows no loss of treatment performance even after 30 years of trouble-free operation. On clay buildings, planted soil filters can even serve as energy-saving air conditioning.

constructed wetlands
for municipalities

constructed wetlands
for private operators

constructed wetlands
for industrial wastewater

Natural swimming pools

Water mint instead of chlorine smell

Outdoor pools with biological water treatment offer healthy enjoyment for all the senses and provide island biotopes for endangered species. Planted gravel filters and regeneration ponds keep the bathing water hygienically clean with little technical effort.
Contact us! We produce creative designs for your city or municipality.

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Rainwater

blue-green-grey infrastructures

Whether at the property level or in the city – on a small or large scale, we design individual nature-oriented concepts for dealing with rainwater. Functionality and experienceability are equally in focus for us as closing cycles of matter and utilizing the resource water in a holistic way.

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Ecological air conditioning

Constructed wetlands keep it cool

Air conditioning for houses and wastewater treatment combined: Adapted to the individual needs of our customers, pre-treated wastewater is spread on a green roof via an irrigation system, so that evapotranspiration cools down the building.

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J&S Newsletter – Stay up to date with our international projects!

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A Proven Concept: New Large-Scale Nature-Based WWTP Project in Mexico for 14,000 People

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In Acolman (State of Mexico), a new nature-based wastewater treatment plant is under construction for the Los Héroes Acolman residential development. The system follows the proven model used in our projects in Rayón, Mexicali and Cihuatlán: robust primary treatment, natural sludge humification, and a vertical-flow constructed wetland, followed by a naturally designed polishing pond providing substantial ecological added value.
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Constructed Wetlands for Holistic Kindergardens

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Since 2023, four nature kindergardens built by LivingCircles GmbH have been equipped with their own treatment plants, even though they are located right in the city. The educational concept of the institution is based on actively involving children in natural cycles and fostering a conscious use of resources. The aim is for children to experience how their own actions directly influence their environment. In line with this guiding principle, LivingCircles decided to integrate decentralized constructed wetlands into the local water cycle.
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Janisch & Schulz at Aquatech Mexico 2025

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At Aquatech Mexico 2025, held September 2–4 at Centro Banamex, Mexico City, J&S Engineers will present innovative water reuse solutions. Our Constructed Wetlands (CW) offer eco-friendly wastewater treatment, enabling irrigation for greenery, parks, and buildings while reducing pollutant discharge into rivers. These systems lower freshwater use, energy costs, and wastewater fees, promoting sustainability. Projects like Cihuatlán and Mexicali demonstrate high purification with minimal energy, supporting local ecosystems. Our work enhances quality of life for communities, flora, and fauna, making CWs a cornerstone of sustainable urban water management.
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In use worldwide

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