Analysis over ten years of the River Chess has shown an increase in phosphate concentrations suggesting an unknown source of phosphate between Solesbridge Lane and Valley Farm Road, Chenies/Sarratt.  

An independent Citizen Science project [coordinated under the auspices of the Chilterns Conservation Board] plans to investigate this further on designated survey days, with volunteers collecting and processing water samples in-situ using portable equipment.

Find out more at River Chess Smarter Water Catchment and how you can get involved at Citizen Science | Smarter Water Catchment