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From Roman drains to ancient filters, these artefacts show how solutions to water contamination have evolved

By Rosa Busquets, Associate Professor, School of Life Sciences, Pharmacy and Chemistry, Kingston University

A new exhibition in London (open until February 2026) called Thirst: In search of freshwater highlights how civilisations have treasured – and been intrinsically linked to – safe, clean water.

As a chemist, I research how freshwater is polluted by modern civilisation. Common contaminants in rivers include pharmaceuticals,

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