UK river pollution monitoring is 50 years out of date, say researchers
Levels of pollutants in the UK's rivers are tested by random sampling, a method that experts say is decades out of date and not thorough enough to tackle the issues facing the waterways
![UK river pollution monitoring is 50 years out of date, say researchers](https://images.newscientist.com/wp-content/uploads/2023/06/01114457/SEI_157517379.jpg)
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