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  • Topic / Tool | 30 May 2025

EU Wastewater Surveillance for Public Health

Wastewater monitoring is an invaluable, complementary approach to public health surveillance. It provides an independent and objective means of monitoring pathogens and pollutants of emerging concern, such as SARS-CoV-2, antimicrobial resistance (AMR), and drugs of abuse. In response, the European Commission has established a digital platform to share and leverage wastewater surveillance results. The Joint Research Centre builds and maintains the EU Wastewater Observatory for Public Health and assists HERA by providing scientific, technical and logistical support.

The EU Wastewater Observatory for Public Health

The Three Pillars

Pillar 1: DEEP - Digital European Exchange Platform

  • Connects and collects data from various wastewater surveillance activities.
  • Transforms data into actionable information for public actors.

Pillar 2: EU4S - European Super-Sites Sentinel System

  • Part of a global network to systematically monitor transportation hubs.
  • Connects community-based wastewater surveillance to track pathogens.

Pillar 3: EU Wastewater Academy

  • Aims to develop and standardize wastewater surveillance capacities.
  • Addresses specific needs of low, middle, and high-income countries.

The Digital European Exchange Platform for SARS-CoV-2

To ensure that the results of the wastewater surveillance are promptly shared by electronic means and used jointly, the European Commission set up the Digital European Exchange Platform for SARS-CoV-2 and its variants (DEEP).

DEEP focuses on:

  • gathering and sharing best practices, from Member States and beyond;
  • collecting results from wastewater surveillance activities;
  • publishing and regularly updating sampling and analysis methods;
  • creating a voluntary list of experts involved in waste water surveillance and disease prevention and control using wastewater surveillance;
  • organizing a collaborative environment, promoting the intercalibration of approaches and sharing of best practices.

To do so, it collects and displays the data received in a harmonized dashboard, partially open to the general public. In future, a broader surveillance going beyond public health is envisaged in particular, to inform on the results of the monitoring in wastewater of emerging pollutants, pathogens, drugs, pharmaceuticals, micro plastics, consumption of antimicrobials, antibiotic microbial resistance, to name but a few.

EU Sewage Sentinel System for SARS-CoV-2

Wastewater reflects in an unbiased manner the biological, chemical and physical impact of human settlements on water used. During the Covid-19 pandemic, wastewater monitoring revealed itself as a useful, complementary and independent, objective approach to COVID-19 surveillance and testing strategies.

Following the publication of the EC’s Recommendation of 17 March 2021 on a common approach to establish a systematic surveillance of SARS-CoV-2 and its variants in wastewaters in the EU, wastewater-based surveillance activities in Europe gained significant momentum and established a pan-European Community of Practices brought together under the EU Sewage Sentinel System for SARS-CoV-2 (EU4S).

The EU Water Academy

The EU Water Academy for Public Health aims to strengthen the institutional framework for water-cycle monitoring and wastewater-based epidemiology, promoting a One Health approach. Through a public-private partnership, the academy is dedicated to building capacity and providing stakeholders with critical insights into the health connections between humans, animals, and ecosystems via water systems. An integrated GIS within the EU Wastewater Observatory for Public Health will combine water quality data with public health and demographic information, while also examining the links between climate change, water quality, and displacement to emphasize One Health relationships. This initiative places special emphasis on community engagement, particularly in resource-limited regions and accession countries, ensuring that water surveillance is equitable and aligned with the One Health framework.

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The EU Wastewater Observatory Platform  

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