Security to standard
DIN SPEC 91377 implemented, BSI C5 largely fulfilled, NIS2 framework addressed – security by design for municipal operations.
Project · Distr@l · 2024–2026
RoSyRe
Robust system control and regulation software in line with DIN SPEC 91377
RoSyRe was funded by the State of Hesse under the Distr@l funding programme, funding line 4B · Ident No. 23_0045_4B · HMD / WIBank.
Gold quality seal of the Distr@l evaluation panel Project profile at LIDIA Hessen
Key facts
The project at a glance.
24 monthsDuration · May 2024 to April 2026
GoldQuality seal of the Distr@l evaluation panel
99.7 %Availability in monthly uptime monitoring
Starting point
Why municipalities need faster water data.
Laboratory results take 7 to 9 days
With manual sampling, more than a week passes between sample and result – by which time the state of the water body has long since changed.
Cyanotoxins are life-threatening
Toxins such as microcystin can be life-threatening on contact or if swallowed. Mandatory microcystin testing has been in force since 2026.
Every day of closure costs money
A bathing ban causes economic damage in the five-figure range per day – for restaurants, boat rental operators and campsites.
Project goal
A water-body management platform for municipalities.
Live data on water quality and water levels, securely captured and transmitted to public authorities – as a basis for early warning and recommended action. The data comes from the solar-powered, self-sufficient WAMO measurement stations.
Main result
A dashboard that is in use – not in the lab.
The RoSyRe dashboard is in production at dashboard.e-ray.eu: map overview of all measuring sites, real-time parameters, interactive time series and CSV export – with live data from Mecklenburg-Vorpommern.
PostgreSQL/PostGIS · GraphQL API · Docker + CI/CD · SFTP/VPN via LTE · Hosting in Germany
End-to-end in production
WAMO → encrypted transmission (SFTP/VPN) → API → dashboard. Hosted in Germany, tenants cleanly separated.
Reliable in operation
Monthly uptime monitoring with around 99.7 % availability – proven in winter operation down to −18.5 °C.
Further results
Four building blocks beyond the dashboard.
21 WAMO stations in real-world operation
Not a laboratory test bench: since 2025, 21 WAMO stations have been running continuously in Mecklenburg-Vorpommern – the largest commercial water-quality project in Germany.
“Bathing and Water Status” widget
Concept and user study, validated with municipalities: clear information for the public on municipal websites – weather, water temperature, water quality index and official bathing water information in one place.
e-Box: remote monitoring
Compact LTE module (solar-powered, microcontroller) for monitoring the WAMO stations – successfully tested in a multi-week field test.
Water quality index (WQI)
Concept based on chlorophyll-a, phycocyanin, oxygen, turbidity and pH. The final assessment remains with the responsible authority – every warning rests on a human decision.
Project timeline
Four milestones, four met.
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07/2024
M1 · Design prototype & requirements list
Requirements analysis, hardware qualification and hourly capture of readings – achieved on schedule, with real field data instead of laboratory trials.
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10/2025
M2 · End-to-end MVP
In production from sensor to dashboard: GraphQL API, map overview, time series, account management and encrypted transmission.
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12/2025
M3 · Water quality index & reports
Data pipeline built, WQI and HABI approaches examined. Forecasting deliberately defined as future work – reliable predictions require multi-year data series.
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04/2026
M4 · Prototype in line with DIN SPEC 91377
Dashboard in productive use with monthly uptime monitoring; widget concept rated positively by municipal partners.
Outlook
What comes after the project.
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Nowcasting
Real-time condition assessment as a precursor to forecasting – the early-warning system deliberately remains future work until multi-year data series are available.
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Widget to product maturity
The “Bathing and Water Status” concept is being developed further for integration into municipal websites.
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e-Box as a series module
From a successful prototype to a reliable series module for remote monitoring.
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Multi-factor authentication
Targeted hardening of the platform for use in security-critical environments.
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Scaling
From Hesse into other federal states – following the tenders tied to the WFD cycle and mandatory microcystin testing.
