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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

Illegal Traps Kill Water Voles

Jan 3, 2011

Category: Wildlife
Posted by: Kathryn

Illegal crayfish traps have killed water voles on the upper reaches of the Chess. The unauthorised traps were detected in Chesham by the Environment Agency. A number of water voles, Britain's most endangered mammal, had become caught in the traps and drowned. The River Chess Association is urging the public to be vigilant and to report such traps to the Environment Agency.

The traps had been set in order to trap signal crayfish, an invasive animal that has wiped out the indigenous white-clawed crayfish on the Chess. It is possible for signal crayfish to be caught legally and without harming other wildlife, as is being done successfully elsewhere on the river. Legal trapping requires written consent from the Environment Agency, the landowner's permission and the use of the right traps in the correct way to stop creatures like water voles becoming trapped. You can download a crayfish trapping guide from the Environment Agency.

The water vole population on the Chess crashed by 97% between 2001 and 2003, largely due to predatory American mink. A huge effort involving local landowners and conservation groups has enabled the water vole population along the river to bounce back. However, this recovery is fragile as the voles are still facing threats such as habitat loss and predation by mink, making these avoidable water vole kills all the more damaging.

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