How clean is Swiss groundwater?

Groundwater is a vital resource, providing 80% of the drinking water supply in Switzerland. But it remains under pressure from a range of threats, in Switzerland and globally.

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https://www.swissinfo.ch/eng/climate-change/how-clean-is-swiss-groundwater/87556075?linkType=guid&utm_source=gn&utm_campaign=swi-rss&utm_medium=rss&utm_content=o

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