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Oct 5, 2022
Category: Pollution
Posted by: Kathryn
On 3rd October, we received a call from Thames Water telling us they had detected a spike in ammonia levels in the effluent from the Chesham Sewage Treatment Works.
Jun 24, 2021
Category: HS2
Posted by: Kathryn

New information from HS2/Align indicates a much greater risk of aquifer contamination than previously admitted. 

Mar 21, 2021
Category: Pollution
Posted by: Kathryn

Daily sewage releases into the river could continue into May, but work is underway to tackle groundwater infiltration into Chesham's sewers which is big contributor to this problem.

Feb 26, 2021
Category: Pollution
Posted by: Kathryn

In March, Thames Water is beginning work to fix groundwater infiltration hotspots in Chesham's sewers. 

Latest News

Action for the Colne Catchment

Dec 16, 2014

Category: Conservation
Posted by: Kathryn

A new web site is hosting dynamic action plans for the Chess and other rivers in the Colne Catchment. The River Colne Catchment Action Network, a partnership of conservation organisations, voluntary groups, councils and water companies, has created a web site that features an action plan for the Chess, detailing completed, on-going, planned and potential projects to protect and improve the river environment. The web site includes a number of River Chess Association projects, such as habitat enhancements at Latimer Park, Chenies Bottom and Scotsbridge and our monitoring work for water voles and riverflies.

The web site also hosts plans for the Ver, Gade, Bulbourne, Misbourne, Alderbourne, Upper Colne, Colne Valley, Pinn, Ash and the Twin Rivers. Together, these create a plan for the Colne Catchment that seeks to:

  • control invasive, non-native species
  • involve people with their local water bodies
  • improve wildlife corridors
  • improve water quality
  • manage flow
  • bring people together to work for the benefit of the rivers


If you know of work that needs doing on your patch, you can suggest a project via the web site. The site is a great way to find out what is happening on your local rivers and find out how to get involved. You can also keep up to date with catchment news via @ColneCAN on Twitter.

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