Current information is always made available here on our website. You will also find a link to our live‑stream event from 09 February 2026, in which the project as a whole is presented.

Thank you for this valuable question. The ecological benefits generated by our proposed measures are of great importance. For this reason, all measures undergo an ecological assessment carried out by the relevant experts at TNL. This ecological evaluation is an integral part of the measure sheets and is made fully available to our clients.

Pesticide contamination in our ecosystems is a major issue — not only for flora and fauna, but also for soils, surface waters, and groundwater and drinking water resources. Whether water infiltrates into the ground or flows over the surface into the next receiving water body and subsequently into the wastewater treatment plant does not change the underlying problem of pesticide pollution.

Connecting regional stakeholders is very important to us. As part of the research project BauWaOpKliNu, a dedicated stakeholder event was held for this purpose. We are in continuous dialogue with these and many other actors and are always looking for jointly developed solutions. Regarding funding opportunities, each measure includes a carefully researched list of potential funding programmes. We are also happy to provide advisory support on this topic.

Agroforestry systems create synergies on multiple levels — naturally also benefiting pollinators such as bees and other insects. In general, our measures are designed to generate ecological added value across the landscape. Many small, decentralised measures with positive ecological effects on our environment — that is the path we follow.

ReTainWater is an innovative digital planning and advisory tool designed to improve water retention. It provides nature‑based and cross‑land‑use solutions that consider both ecological and economic aspects.

Together with Coburg University of Applied Sciences, we conducted a research project commissioned by the Federal Ministry of Education and Research on climate‑resilient land‑use planning (BauWaOpKliNu). The aim was to improve water retention on undeveloped land such as forests and agricultural areas. The valuable findings and insights from this completed research project formed the basis for the development of ReTainWater.

ReTainWater delivers information and guidance on site‑specific measures directly where heavy rainfall events originate — in the landscape, before water reaches settlements. The underlying nature‑based solutions can be implemented more quickly and cost‑effectively than technical (“grey”) infrastructure. They enhance natural processes: improving the water balance, strengthening soils and increasing erosion control.

ReTainWater represents a new approach: scientifically sound, practice‑oriented and transparently verifiable land selection with high leverage for improving water retention, combined with tailored nature‑based measures that can be implemented quickly. Compared to grey infrastructure, these solutions are more cost‑efficient, faster to implement and more sustainable in the long term.

ReTainWater is aimed primarily at municipalities, districts and public authorities with land access, planning authority and access to funding. Together with all relevant stakeholders, we develop a holistic approach for preventive measures that generate ecological, economic and social benefits. Additionally, the tool addresses operators of critical infrastructure, associations, companies with elevated risk exposure and committed private actors.

The catalogue of measures integrated into ReTainWater focuses on addressing the root causes of flooding and drought damage:

• Heavy rainfall protection → reduced damage
• Drought prevention → increased water availability
• Land‑use benefits → lower irrigation needs, reduced drought stress and wildfire risk
• Biodiversity → improved species diversity

Those who invest in flood and drought prevention today:

• save money in the long term
• reduce risks

safeguard productivity, infrastructure and quality of life

Yes. Drainage, soil sealing and intensive land use have significantly reduced the natural water‑storage capacity of landscapes — leading to flooding and drought, further intensified by climate change. Enhancing water retention through nature‑based solutions strengthens the landscape’s water balance and mitigates ecological risks from heavy rainfall and dry periods. At the same time, ecosystems become more resilient, reducing damage and supporting biodiversity — a true win‑win for people and nature.

Simply contact us by email or phone to discuss your request, particularly the type and scope of the areas under consideration. We then assess the initial situation through data processing, automated land selection and the integration of regional characteristics. We also support stakeholder engagement and public communication to ensure early involvement. Using a hotspot analysis, we identify high‑impact areas and prioritise them. Based on this analysis, we develop a tailored, effective and cross‑land‑use concept of measures. We additionally provide information on funding opportunities, permitting processes and the expected ecological impact.

After the analysis, the measures can generally be implemented independently. However, we are happy to continue providing support and can prepare a tailored proposal for implementation. We offer extensive expertise in environmental planning and landscape management, and we work with strong nationwide partners — including landscaping and construction companies — to ensure professional execution. We also support the process with technical advice, an up‑to‑date funding database and comprehensive expertise in permitting procedures.