Worminghall Brook


The Worminghall Brook starts just below Brill, flowing through agricultural land until reaching Worminghall and meeting the Thame between Waterperry and Ickford. There is one sewage treatment works, Worminghall STW, that discharges in to the Brook. The land use is mainly agricultural with some pasture as the Brook meets the main river.

In 2015, the Environment Agency classified the Worminghall Brook as “moderate”, meeting its 2015 objective. This classification is based on multiple factors, but the main drivers of the moderate status are the phosphate, invertebrates and macrophytes, all other measured factors are currently ranked as “high” or “good”. It is not surprising that phosphate is not good in this catchment due to the intensity of agricultural land around the brook and the added pressure of a sewage treatment works. There is currently no 2027 objective for this brook; as it stands, phosphate levels are deemed as technically infeasible to improve. We hope that this will change in the future as we work with water companies, farmers and communities to reduce phosphate input and allow macrophytes and invertebrate communities to recover.

You can find out more about the classification of rivers in our catchment by using the Environment Agency’s Catchment Data Explorer.


Small Waters

The river isn’t the only water that we are concerned with. There are multiple small waters including ponds, ditches and steams. All of which are highlighted on the map below.worminghall-brook-small-waters



We currently have no volunteers regularly monitoring in this area. You can find out more about our volunteer monitoring and how you could get involved in monitoring yourself here.

Other Groups

There are currently no groups that are working specifically on the Worminghall Brook. If you would like to get involved by starting a local group in your area, then please get in touch.

Worminghall Brook, taken from the bridge in Worminghall.

Worminghall Brook, taken from the bridge in Worminghall.

Worminghall Brook looking overgrown, just outside Worminghall.

Worminghall Brook looking overgrown, just outside Worminghall.