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Latest News


River Mole Citizen Science: March 2025 Pollution Test Results - A Dry Month Kick-Starts an early Summer Deterioration in Water Quality
Welcome back to our monthly update on the health of the River Mole and its tributaries, as monitored by our dedicated team of citizen...
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Apr 89 min read
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River Mole River Watch - recent trends in storm overflows in Mole catchment.
Simon has made a video to explain the recent trends in storm overflows throughout the River Mole catchment Click here here for the link...
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Apr 21 min read
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February River Mole River Watch newsletter
Welcome to our February newsletter which has a summary of our latest citizen science test results for last month. Let's start with some...
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Mar 106 min read
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River Mole River Watch: January 2025 pollution test results update
In late January, citizen scientists from the River Mole River Watch conducted their monthly water quality assessments to evaluate...
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Feb 127 min read
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News from the River Mole: early January 2025
December and early January have been very busy months for River Mole River Watch.
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Jan 107 min read
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New this month! November Update: Citizen Science Pollution Findings for the River Mole – Now in Video!
Hi everyone, This month, we're trying something new—sharing our news through a video! So, grab a coffee and take 15 minutes to catch up...
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Dec 4, 20241 min read
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October pollution results: What are the emerging pollution patterns in the River Mole after 18 months of citizen science?
Eighteen months of citizen science data in the River Mole catchment reveal consistent and concerning patterns in water pollution.
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Nov 2, 20247 min read
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Foam Alone? Citizen Science Data Reveals Weak Link Between Foam and Water Quality on the River Mole
Foam on the Mole Foam is a common sight on the River Mole and is typically associated with pollution. It is frequently mentioned on...
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Oct 18, 202415 min read
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Trustee day out to SES Water's Bough Beech Reservoir & Flow Zone.
In September four trustees - Caroline, Nigel, Simon and Sue - had a day out to Edenbridge in Kent to visit SES Water's reservoir Bough Beech
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Oct 11, 20242 min read
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September River Mole test results: the solution to (hiding) pollution is dilution
We examine the early start to seasonal improvements in pollution across the catchment due to dilution from record breaking rainfall.
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Oct 8, 202410 min read
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Leigh Brook: The Most Polluted Stream in the River Mole Catchment?
Extremely high phosphate and ammoniacal nitrogen levels mean that Leigh Brook is probably the most polluted stream in the Mole catchment.
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Sep 17, 202416 min read
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August Pollution Test Results: River Mole shows some improvement over July spike but Water Quality is still Poor
Welcome to our August round-up of test results for the River Mole. Here are a few pictures from our citizen scientists taken on test day...
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Aug 31, 20249 min read
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River Mole E. Coli Levels: Our first look at Bacterial Risks Across the Catchment
Summary: In an ambitious effort to assess water quality across the River Mole catchment, teams from River Mole River Watch, the Wey...
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Aug 24, 20248 min read
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Something bad is happening to the River Mole: shocking increase in pollution levels across the catchment!
Shocking and unprecedented jump in River Mole pollution levels this month is of great concern for river wildlife health and people.
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Aug 1, 202410 min read
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Rising pollution in the River Mole through early Summer, our tests reveal
Our water quality test results on the River Mole for June across the catchment show a disturbingly marked increase in levels of...
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Jul 23, 20249 min read
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May test results show River Mole entering period of damaging poor water quality
Our citizen science volunteers, with the help of several newly trained recruits, were out testing in the last weekend of May across the...
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Jun 4, 20245 min read
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River Mole News: Exciting New Testing Roll-Out and a Sharp Deterioration in water quality from April pollution test results!
Our wonderful citizen scientists were out monitoring water quality at all of our test sites across the River Mole catchment over the last...
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May 6, 20248 min read
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March test results for the River Mole catchment
March was another wet month with 110mm of rain falling in the River Mole catchment. This is over 200% of the long term average rainfall...
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Apr 5, 20244 min read
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February River Mole pollution data is in!
Our fantastic River Mole River Watch citizen scientists were out collecting data on the River Mole over the final weekend in February....
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Feb 29, 20245 min read
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January River Mole pollution data is in!
Here are the January pollution test results carried out by our fantastic River Mole River Watch citizen scientists. First off, above are...
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Feb 2, 20244 min read
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