The pollution of the River Wye has reached a critical point and unless action is taken in the next two years the whole web of life in the river will collapse.
The aim of this free event is to promote how important the river and the valley is not only for humans, but all wildlife.
Many local clubs, groups and organisations will have stands on Chippenham Fields.
Bring the family and enjoy some delicious wood-fired pizzas and listen to live music.
There will be children activities and you can try some Citizen Science Water Testing.
Join the Samba Band procession from Monnow Bridge at 10:45am.
