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Hampstead Norreys Sewage Treatment Works (STW) upgrade
Thames Water will be upgrading the sewage treatment works at Hampstead Norreys in West Berkshire. This will improve its ability to treat the volumes of incoming sewage, reducing the need for untreated discharges in wet weather.
The upgrade is expected to reduce storm sewage overflows by 143 events each year and reduce concentrations of phosphorus in treated effluent to ≤2.9mg/l on average (this means that the wastewater treatment process aims to ensure that the phosphorus levels in the water released after treatment do not exceed 2.9 milligrams per liter on average).
Thames Water plan to build a 1.25ha wetlands as part of this works, providing biodiversity benefits on top of the water quality improvements. Work is also currently being carried out to reduce groundwater infiltration and other unwanted surface water entering the wastewater network in this area. Further investigation will continue in this area, which will help inform Thames Water’s long-term planning. These benefits are forecast to help protect and improve the quality of the River Pang which is a chalk stream.
Photo to the right: Hampstead Norreys STW - Photo supplied by Thames Water
Hampstead Norreys Sewage Treatment Works (STW) upgrade
Thames Water will be upgrading the sewage treatment works at Hampstead Norreys in West Berkshire. This will improve its ability to treat the volumes of incoming sewage, reducing the need for untreated discharges in wet weather.
The upgrade is expected to reduce storm sewage overflows by 143 events each year and reduce concentrations of phosphorus in treated effluent to ≤2.9mg/l on average (this means that the wastewater treatment process aims to ensure that the phosphorus levels in the water released after treatment do not exceed 2.9 milligrams per liter on average).
Thames Water plan to build a 1.25ha wetlands as part of this works, providing biodiversity benefits on top of the water quality improvements. Work is also currently being carried out to reduce groundwater infiltration and other unwanted surface water entering the wastewater network in this area. Further investigation will continue in this area, which will help inform Thames Water’s long-term planning. These benefits are forecast to help protect and improve the quality of the River Pang which is a chalk stream.
Photo to the right: Hampstead Norreys STW - Photo supplied by Thames Water
