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We share references with permission. We focus on quality over quantity.
We share references with permission. We focus on quality over quantity.
Global presence
Scaling impact internationally
Heerlen, NL
Zuyderland Medical Center
As radionuclide therapy grows, hospitals face a practical infrastructure question: how should radioactive wastewater from treatment rooms be managed safely without creating unnecessarily large or complex technical installations?
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Freiburg, DE
Universitätsklinikum Freiburg
As radioligand therapy (RLT) continues to grow, hospitals face an increasingly familiar challenge: how to accommodate more patients when their existing radioactive wastewater infrastructure is already operating at full capacity.
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Rotterdam, NL
Erasmus MC & Amsterdam UMC
Rotterdam and Amsterdam enjoy a healthy rivalry. But when it comes to keeping contrast agents out of wastewater, Erasmus MC and Amsterdam UMC are firmly on the same side.
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Genolier, CH
Clinique de Genolier
How can a clinic expand radioligand therapy without building large underground decay tanks? At Clinique de Genolier in Switzerland, Zereau is combining source-based filtration with compact water buffering in two treatment rooms. Installation is scheduled for October 2026, with the first clinical use planned for November.
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United Kingdom
InHealth
This is the innovative concept behind InHealth’s relocatable Radioligand Therapy (RLT) service: a purpose-built treatment facility designed to bring advanced nuclear medicine therapies closer to patients across the United Kingdom.
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Alkmaar, NL
Noordwest Ziekenhuisgroep
Reducing pharmaceutical residues in wastewater starts where they enter the water cycle. At Noordwest Ziekenhuisgroep in Alkmaar, this meant starting in the Intensive Care Unit.
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Marbach, DE
ContrastCatch filter recovery
Capturing contrast agents before they enter the sewer is only the beginning. What happens when a ContrastCatch filter is full? Its next journey connects reusable filter components, practical insights and data for hospitals and the recovery of valuable iodine.
View caseRising urgency
Awareness is growing.Regulation is coming.
February 15, 2022
"Pharmaceuticals pollute the world's rivers, says global study"
June 12, 2023
"Drugs in the water: how medicines are contaminating our rivers and seas"
September 5, 2024
"Water pollution: hospitals urged to act on pharmaceutical residues"
Newsroom
October 8, 2026
EANM 2026: Zereau at Booth 321 – hall X3. Is Our Infrastructure Ready for the Growth of Nuclear Medicine?
Next week, the nuclear medicine community comes together in Vienna for EANM’26. Radioligand therapy is expanding. New radiopharmaceuticals are moving through clinical development. Alpha therapies are gaining momentum. Patient access is increasing, and hospitals across Europe are preparing for further growth.
October 1, 2026
Polluter Pays. But for What, Exactly?
April 21, 2026
Clean Water Starts at the Source. Why treating healthcare micropollutants before dilution deserves a bigger role in our water strategy.
February 3, 2026
Flushing Doesn’t Mean It’s Gone. Growing alpha therapies demand wastewater protection.
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What hospitals say:
“The Netherlands scores poorly on surface water quality. Noordwest Ziekenhuisgroep acts by installing Zereau filters in multiple departments. They capture pharmaceuticals and antibiotics at the source, reduce strain on water authorities, and improve regional water quality.”
Noordwest Ziekenhuisgroep
Alkmaar, the Netherlands
Impact at the source
Measured results from real-world hospital environments.
> 99,9% removal from wastewater
Solid install-base in 40+ hospitals throughout Europe.
-70% water
Reduce water consumption through water-efficient technology.
100% circular potential
Validated recovery of valuable components from medical residues.
0 downstream issues
Efficient removal, capture filters avoid cubic metres.