An Earthwatch research project investigating the health of global freshwater ecosystems on a scale never seen before.

We ask that all FreshWater Watchers ensure that they are following the latest advice from their government and local health authorities regarding self-isolation, social distancing and movement. If local restrictions mean that you are not able to take part in the FreshWater Watch activities, please postpone them for as long as necessary - your safety and well-being are our priority. Please keep abreast of the latest government advice as this is changing frequently.
We are sorry to announce that following the UK government’s lockdown on March 23rd, all non-essential FreshWater Watch sampling is suspended in the UK until further notice. We will continue to follow government advice for any changes, and will notify you when you can start monitoring again. The Thames WaterBlitz will be postponed until Autumn 2020. Exact dates will be confirmed in due course.

00024015 Data sets collected to date. Click Here.

More people die from poor quality water annually than from all forms of violence, including war.

As water quality declines, more than 50% of freshwater fish species are at risk of extinction.

Up to 30% of the nitrogen that is used in modern agriculture ends up in our fresh water.


A 300% rise in phosphates has led to an increase in algal blooms which can damage human health.

You can make the difference. Join our global community of citizen scientists to help promote freshwater sustainability.



What is FreshWater Watch?

Watch this animation to find out more.



Are you one of our top citizen scientists?

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Meet Ian, one of our scientists

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