Understand waters better.

Surface waters are sensitive socio-ecological systems and thus the basis of life for animals and people. Yet in extreme weather, rivers and lakes are turning into critical danger zones more and more often. That is why we should stay one step ahead of the interactions between waters, environment and climate. Together we unlock a new climate resilience for our surface waters and help bring them back into balance.

e.Ray Europa GmbH, June 2024
In conversation

A limnologist on the new
pressures on our waters.

Sebastian Lemke visits limnologist PD Dr. Helga Zimmermann-Timm at the water. She talks about what has changed since the 1970s, and why continuous data is the most important diagnostic tool today.

Read the interview →
Badeseen: Überwachung der Wasserqualität mit neuer Sensorik
ARD Nordmagazin · 17 April 2025
On television

Badeseen: Überwachung der Wasserqualität mit neuer Sensorik

The Nordmagazin reports from Vorpommern-Greifswald: the district now monitors its bathing sites digitally, with the first floating measuring station in the Kosenowsee near Gützkow. In German.

Watch in the ARD media library ↗
Our conviction

Water intelligence for the climate resilience of the future

We are convinced: the better we understand waters, the earlier we can take the right measures and keep these essential ecosystems in balance. The water intelligence of tomorrow is on its way, and we are right at the forefront.

Holistic approach

e.Ray combines its own measurements with satellite data, existing public datasets and limnological expert reports to form a shared picture of a water body. This produces water intelligence that enables municipalities, public authorities and operators to detect risks early, decide on a sound basis and keep waters in balance over the long term.

Legal and regulatory compliance

Water Framework Directive, Drinking Water Ordinance, EU Bathing Water Directive: our measurements and analyses provide the data basis for monitoring under these regulatory frameworks and supplement official monitoring programmes with data at high temporal resolution. The technical and legal classification remains with the competent authorities. The data belongs to the client, hosted in the EU, GDPR-compliant and without third-country transfers.

Your water body deserves
a clear picture.

A free trial analysis for your catchment, or a demo unit for one season – we find the right entry point.

Request a call → Measures catalogue