New training resources to improve the safety and sanitation of small drinking water systems that are essential to the daily lives of billions worldwide are being developed by scientists from the University of Surrey.

These vulnerable systems, which are typically unregulated and unsupported by major water utilities, serve around 40% of the global population and are particularly at risk from contamination, poor infrastructure and the growing impacts of climate change.

Dr Katherine Pond and Dr Phil Aldous from the University of Surrey’s World Health Organization’s Collaborating Centre for the Protection of Water Quality and Human Health have already supported work to strengthen small water systems through updated risk assessment forms and global guidelines for those managing or using the supplies.

To date, nearly 7,000 people have downloaded the risk assessment forms, while the guidelines have reached almost 52,000 users globally. Building on this success, the team is now developing a training pack focused on drinking water quality surveillance, tailored for public health officials across the European Region.

Dr Katherine Pond, Associate Professor in Environmental Engineering and the lead contact for the WHO Collaborating Centre at the University of Surrey, said:

“Surveillance is key to detecting and responding to potential issues before they become problems in the water supply system. As climate change increases the risk to water supplies globally, it’s vital that we empower local communities and public health officials with the necessary knowledge to protect their water.”

Dr Phil Aldous, Visiting Professor at the University of Surrey, added:

“Small water supplies are often overlooked, but they’re the only source of water for many people. Our future priority is to look at how climate change is impacting smaller systems which are particularly vulnerable.”

The University of Surrey is one of only two WHO Collaborating Centres for water in the UK, with its research playing a key role in international efforts to improve water safety and sanitation. Dr Pond and Dr Aldous recently showcased their work at the European meeting of WHO Collaborating Centres on Water, highlighting Surrey’s contributions to global public health through research, training and practical solutions.

The University is set to host the next annual meeting in 2026.

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