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Insight and Health

Our water is full of drugs and we don't know their effects

Water reuse means we are all consuming a cocktail of other people's leftover medicines, but measuring their impact is almost impossible. It's time we clean up our act

By Anthony King

14 September 2016

water

What’s in the water?

Agnieszka Rayss/Anzenberger/eyevine

PICK up a glass, fill it from the tap and take a sip. You have just had a tiny dose of the pill your neighbour took days before.

Excreted and flushed through our sewage works and waterways, drug molecules are all around us. A recent analysis of streams in the US detected an entire pharmacy: diabetic meds, muscle relaxants, opioids, antibiotics, antidepressants and more. Drugs have even been found in crops irrigated by treated waste water.

The amounts that end up in your glass are minuscule, and…

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