Overview
Gerrards Cross STW in Denham, Buckinghamshire serves approximately 8,100 people. The plant operates under the UK's wastewater regulatory framework, discharging treated effluent into local watercourses.
Gerrards Cross STW is a wastewater treatment plant located near Denham in Buckinghamshire, England. It serves a population of around 8,100 people, placing it in the small-to-medium agglomeration category under UK regulations. The plant is situated in the Colne Valley, part of the Thames Basin. As a UK wastewater facility, Gerrards Cross STW is regulated under the Water Industry Act 1991 and must comply with discharge permits issued by the Environment Agency. For agglomerations of this size, secondary treatment is typically required, with additional nutrient removal if discharging into sensitive areas. It is expected to meet the standards set by the Urban Waste Water Treatment (England and Wales) Regulations 2003. The treated effluent from Gerrards Cross STW likely discharges into a local watercourse that feeds into the River Colne, a tributary of the River Thames. The Thames Basin supports diverse aquatic life and is an important ecological corridor. The plant's location inland, away from the coast, reduces direct marine impact, but its discharge contributes to the overall water quality of the Thames catchment.
Environmental context
Gerrards Cross STW discharges into the River Colne catchment, which flows into the River Thames and eventually the North Sea. The Colne Valley is a designated area of ecological importance, supporting wetlands, meadows, and diverse bird species. The plant's effluent must meet strict quality standards to protect this sensitive freshwater ecosystem and downstream habitats.
Frequently asked questions
Gerrards Cross STW is located on Amersham Road in Baker's Wood, Denham, Buckinghamshire, England, near the village of Tatling End.
The plant serves approximately 8,100 people in the Gerrards Cross and Denham areas.
The treated effluent is discharged into a local watercourse that feeds into the River Colne, a tributary of the River Thames.
The plant operates under the UK's Water Industry Act 1991 and the Urban Waste Water Treatment (England and Wales) Regulations 2003, with discharge permits issued by the Environment Agency.
For agglomerations of this size, secondary treatment is standard, with potential tertiary treatment if discharging into sensitive areas like the Thames Basin.
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