Simon has made a video to explain the recent trends in storm overflows throughout the River Mole catchment Click here here for the link...

Sewage once again flooded into streets and properties from Thames Water's Horley Sewage Treatment Works (STW) on 5 January 2025. Sewage...

December and early January have been very busy months for River Mole River Watch.

Eighteen months of citizen science data in the River Mole catchment reveal consistent and concerning patterns in water pollution.

We examine the early start to seasonal improvements in pollution across the catchment due to dilution from record breaking rainfall.

Extremely high phosphate and ammoniacal nitrogen levels mean that Leigh Brook is probably the most polluted stream in the Mole catchment.

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...

The recent Ofwat report proposes a £104 million fine on Thames Water for failing Urban Waste Water Treatment standards. The notice...

Shocking and unprecedented jump in River Mole pollution levels this month is of great concern for river wildlife health and people.

Our water quality test results on the River Mole for June across the catchment show a disturbingly marked increase in levels of...

Our wonderful citizen scientists were out monitoring water quality at all of our test sites across the River Mole catchment over the last...

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...

Here are the January pollution test results carried out by our fantastic River Mole River Watch citizen scientists. First off, above are...

Here are the pollution results for December 2023. Our fabulous River Mole River Watch citizen scientists collected data across the entire...

River Mole November pollution data is out! Things are getting complicated as more rainfall reduces Phosphate levels despite storm...

River Mole River Watch October pollution test results are in! Overall catchment phosphate levels were down due to dilution in higher...

September pollution test results from River Mole citizen scientists are in (sorry for delay posting here)! Phosphate levels are somewhat...

In October 2022, Thames Water gave a group of us a tour of the sewage works to explain how they treat our waste water. It wasn't as...