A woman wearing a light jacket and glasses crouches by a riverbank under a bridge, smiling and holding up a small water testing tube. She wears a glove. The river and lush greenery fill the background. Text at the bottom reads, "Your river needs you!"

⚠️ Our rivers and freshwater habitats are at crisis point and we need urgent action.

💧 Join the fight for healthy fresh water as part of the #GreatUKWaterBlitz - our next Blitz is right around the corner!

💡Express interest today to be first in line for our Autumn Blitz 🧪

Three people stand near a calm, reflective pond on a sunny day. One person on the left, wearing a cap and navy shirt, holds a long tool with a jar containing a water sample. The person in the middle, in a green shirt, observes while holding a small sample cup and a long plastic tube. The person on the right, in a black shirt, checks a smartphone and holds a paper. Lush greenery surrounds the scene under a clear blue sky.

Quote graphic with a blue wavy background. The text reads: "We’ve been carrying out monthly tests of the six ponds at Perivale Wood, West London, since joining Earthwatch’s FreshWater Watch programme in 2024. Taking part in the Great UK WaterBlitz was a great way to involve the local community who regularly volunteer with habitat management work at the reserve and are keen to learn more about the water quality and how it affects the wildlife in our ponds." At the bottom, it attributes the quote to Nicola Goddard, Selborne Society, West London.

“Taking part in the WaterBlitz was a great way to involve the local community...”

💙Thank you to our #GreatUKWaterBlitz participant, Nicola, and the Selborne Society in West London for sharing their story.

Find out how to join our next WaterBlitz in April 🔗 https://earthwatch.pulse.ly/ujnhbeafhg

A man with a beard and wearing a green baseball cap smiles into the camera as he holds up a FreshWater Watch water testing chart showing levels of nitrates and phosphates in different shades of pink. There is a river flowing in the background framed by green shrubs and trees.

A quote on a blue wave-patterned background states: "I thought it was essential to be part of Earthwatch’s Great UK WaterBlitz to map the condition of our waterways. I chose the River Taff, a beautiful river flowing through the centre of Cardiff where I live. It has taken decades of effort to improve its cleanliness and attractiveness. We should not let the river slide back into the dreadfully polluted state it was in during the 1970s!" The quote is attributed to David Wynn.

"We should not let the river slide back into the dreadfully polluted state it was in during the 1970s!"

💙 David, #GreatUKWaterBlitz participant.

Today is International Day of Action for Rivers! Be part of the change and join our next WaterBlitz in April
🔗 https://earthwatch.pulse.ly/7pmvvg6btz

💧The #GreatUKWaterBlitz is back 24 – 27 April, and sign-ups are now open! How healthy is your local river, lake, pond or stream? Take part in the next WaterBlitz and find out...🧪

Get your FREE water testing kit 🔗 https://earthwatch.pulse.ly/ugbwigcy1n

#CitizenScience #WaterPollution

Thanks so much for sharing this! 💙 The #GreatUKWaterBlitz is a biannual campaign calling on everyone to go out and test the quality of their local freshwater including rivers, streams, ponds and lakes using our simple water testing kit. 🧪 With this data, we can fight for a better freshwater future!

A news image features a small waterfall in a river lock with a wooden bridge above. The headline reads: “Cocktails” of common pharmaceuticals in our waterways may promote antibiotic resistance. A blue water droplet icon with "IN THE NEWS!" text is on the top left. Source: University of Exeter.

⚠️💧 A new study by the University of Exeter found that when common non-antibiotic drugs like painkillers mix with antibiotics in our waterways, they help bacteria become antibiotic-resistant.

This aligns with findings from our Autumn #GreatUKWaterBlitz. 🔗 https://earthwatch.pulse.ly/cpuuoj9fg5

Thames river basin has the worst water quality in the UK - Richmond and Twickenham Green Party The results of the Great UK WaterBlitz, a survey of the health of rivers and streams in the UK carried out by volunteers under the aegis of the charity Earthwatch UK, have just been published – and, f...

It's official: the #Thames has the worst water quality in the country. Cllr Chas Warlow: “I was genuinely shocked when I saw the high levels of pollutants in the samples I took." @chaswarlow.bsky.social #GreatUKWaterBlitz www.rtgp.org.uk/2025/11/tham... #StopThamesWater

Text reads: "60% of data points across the UK showed poor water quality," with wavy blue lines above and below.

Map of England highlighting nutrient pollution in freshwater bodies; Northumberland is mostly acceptable with 94% blue, 6% red. Cambridgeshire is largely unacceptable with 91% red, 9% blue.

Text reads: "Additional samples tested for other chemicals revealed high levels of:" followed by three red icons and labels: "Antibiotics" with a pill icon, "Ketamine" with a syringe icon, and "Pesticide" with an insect icon. Below is a wavy blue line.

The cover of the Great UK WaterBlitz Autumn 2025 Report. It features the FreshWater Watch by Earthwatch Europe logo at the top, with a wavy design showcasing various people conducting water testing activities outdoors. The text "Discover more!" is displayed on the right.

💧🧪 Thank you to the 5,700+ volunteers who took part in the #GreatUKWaterBlitz this September! With your data, we can build a picture of freshwater health across the UK. Here are some of the findings...

Discover more in the WaterBlitz report 🔗 https://earthwatch.pulse.ly/slzwks3igw

The cover of the Great UK WaterBlitz Autumn 2025 Report by the environmental charity Earthwatch Europe, showcasing a collage of photos featuring various individuals engaged in water testing activities near bodies of water. The cover is placed on a dark blue background with a white wavy line, and the phrase "out now!" is displayed prominently.

💧📋 The results are in for our September #GreatUKWaterBlitz...

🧪 Thank you to the 5,700+ volunteers who tested their local rivers, lakes, ponds and streams between 19-22 September. With your data, we can fight for real change!

Read the full report 🔗 https://earthwatch.pulse.ly/d3u83xh0y7

What a great citizen science weekend it was! 💙 Thank you to everyone who helped collect valuable data on freshwater health as part of our #GreatUKWaterBlitz.

💧This Halloween, the real horror is in the water... 👻

The September #GreatUKWaterBlitz report will reveal it all – stay tuned!

💙Thank you to everyone who took part in the #GreatUKWaterBlitz this weekend! From 19-22 September, 5,700+ people went out to measure their local water quality, collecting 3,300+ datapoints. With this data, we can fight for real change!

📋Stay tuned for the WaterBlitz report to be published soon.

Lovely Sunday doing the #GreatUKWaterBlitz at Blackadder water, in the #ScottishBorders
#photography

Just took part in the #GreatUKWaterBlitz!
Results are here…www.freshwaterwatch.org/pages/great-uk-waterblit...

💧🧪 Are you joining the fight for healthy fresh water this weekend? Share your WaterBlitz story with us by tagging @earthwatcheurope and using #GreatUKWaterBlitz.

Today @derbyswildlife.bsky.social we got involved in some #CitizenScience
Even if you haven't got a #GreatUKWaterblitz kit, you can still take part in the Big River Watch between now and 25 Sept
@theriverstrust.bsky.social @earthwatcheurope.bsky.social
@josmithwild.bsky.social

Four children stand on a rocky riverbank. They hold a water testing kit. They are surrounded by lush greenery beside the calm river. The sky is cloudy. Text at the bottom reads "Time to test..."

💧🧪 The #GreatUKWaterBlitz is here!

Thank you to everyone who has signed up to collect valuable data on freshwater health this weekend.

Please do the testing and submit your results before the end of Monday 22 September.

Watch our top tips 🔗 https://youtu.be/riOLLcC1C4E?feature=shared

Screenshot of an article from The Guardian newspaper with the headline: "Revealed: river pollution twice as bad inside national parks as outside them". Below the headline, a serene river flows through a lush, green forest with scattered rocks. White text below the screenshot states: "Source: The Guardian"

🚨Guardian exclusive reveals that river pollution in UK national parks is TWICE as bad as elsewhere.

✊But citizen scientists are fighting back! Thanks to everyone joining our #GreatUKWaterBlitz & The Rivers Trust's #BigRiverWatch this weekend.

Read more 🔗 https://theguardian.pulse.ly/joaens9bld

💧🧪 We're looking forward to a wonderful weekend of freshwater #CitizenScience! In addition to joining us for the #GreatUKWaterBlitz, you can also take part in the #BigRiverWatch by our friends @theriverstrust.bsky.social! 👇💙

A playlist titled "Great UK WaterBlitz" is displayed on a music streaming app. It includes 20 songs with themes related to water. The background is a blue wave pattern. The featured songs are by various artists such as The Decemberists, Creedence Clearwater Revival, and Simon & Garfunkel. The playlist invites listeners to prepare for the #GreatUKWaterBlitz event happening from September 19-22, 2025.

🎶 Next weekend, we’ll be “Down by the River” to see if there’s “Something in the Water” and to “Bring the People Together” in the fight for healthy fresh water...

Get in the mood for the #GreatUKWaterBlitz 🎧 https://pulse.ly/57shbccnt5

What’s on your WaterBlitz playlist? Share in the comments!

Thanks for joining the fight for healthy fresh water, Sharon! 💙 #GreatUKWaterBlitz

Thanks for joining the fight for healthy fresh water! 💙 #GreatUKWaterBlitz

A smiling person in a straw hat and blue "Earthwatch Europe" shirt is near a riverside wall, wearing gloves. They have a test kit with colored strips and glass jar containing a water sample on the wall. The background features a river and trees. A graphic at the bottom reads, "LAST CHANCE to sign up for September!" with blue wave patterns.

⌛Today's your LAST CHANCE to sign up for our next #GreatUKWaterBlitz!

🗓️ Are you free over the weekend of 19-22 September?

🧪💧 Want to take action for your local river, lake, pond or stream?

Sign up to receive your free water testing kit 🔗 https://earthwatch.pulse.ly/w1vkkkejb6

Great UK WaterBlitz - Earthwatch Europe Join the Great UK WaterBlitz and help fight for healthy freshwater. Help us measure water quality across the UK.

Get a free water testing kit.
I've just signed up to take part in the #GreatUKWaterBlitz by @earthwatcheurope.bsky.social. Join the fight for healthy freshwater here: earthwatch.org.uk/greatukwater...

Great UK WaterBlitz - Earthwatch Europe Join the Great UK WaterBlitz and help fight for healthy freshwater. Help us measure water quality across the UK.

I've just signed up to take part in the #GreatUKWaterBlitz by @earthwatcheurope.bsky.social. Join the fight for healthy freshwater here: earthwatch.org.uk/greatukwater...

💧 Join the #GreatUKWaterBlitz! 💧
From 19–22 Sept 2025, people across the UK will test the quality of their local rivers, lakes, and streams.This biannual citizen science campaign helps build a national picture of freshwater health - and you can be part of it.
🔗 Sign up to take part: lnkd.in/e5GVxhpE

Happy #NationalDogDay! Our four-legged friend, Blue, shows us what he's most excited about this autumn... 🐶💙 #GreatUKWaterBlitz

Thanks for joining the fight for healthy fresh water! 💙 #GreatUKWaterBlitz

Thanks for joining the fight for healthy fresh water! 💙 #GreatUKWaterBlitz

Thanks for joining the fight for healthy fresh water! 💙 #GreatUKWaterBlitz