The water now takes on a different appearance. So does the riverbed and weed, which is coated in algae and sediment. This is a common sign of sewage pollution.
Ampney Brook after the pumping station in June 2020
Downstream of the sewage works, we find algae and sediment covering the weeds. This prevents photosynthesis and chokes aquatic plants.
Diatoms (a type of algae) and sediment covers plants after the sewage works
Beneath the surface, the water is cloudy and grey. Some trout appear to be surviving, but these conditions are not conducive to life.
Downstream of the sewage works, and two pumping stations,
footage taken near Down Ampney in June 2020
Before sewage works & pumping stations
After sewage works
& pumping stations
Sediment over gravel.
Conditions are not
conducive to life.
Why does it matter?
Many species of fish can't spawn in polluted riverbeds. You may not see dead fish, but they'll slowly disappear.
Plants are choked by sewage pollution. Eventually, they will stop growing -- removing an important habitat for many species.
Sewage pollution makes water unsafe for people and their pets. This is happening in rivers across the country.