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Storm overflows operate as relief valves built into the combined sewer system. They discharge excess sewage and rainwater to rivers, lakes, groundwater or the sea, when the sewer system is under strain. This protects properties from flooding and prevents sewage backing up into homes, businesses and streets in response to rainfall or snowmelt. The Environment Agency sets strict protective permits to limit the impact of storm overflows on the environment.
Event duration monitoring (EDM)
This records the frequency and duration of storm overflow spills. They are the primary source of data on the performance of storm overflows.
Storm overflows discharge reduction plan
Defra's storm overflows discharge reduction plan sets stringent targets to protect people and the environment.
Tackling storm overflow discharges
In a sewer pipe on the River Tame in the West Midlands is a small blue box, a key piece in the puzzle to tackle sewage spills.
Thank you for visiting our new water hub. This is a pilot service. We acknowledge not everything is covered here yet, this is a new offering which will grow over the coming months.
What are storm overflows?
Storm overflows operate as relief valves built into the combined sewer system. They discharge excess sewage and rainwater to rivers, lakes, groundwater or the sea, when the sewer system is under strain. This protects properties from flooding and prevents sewage backing up into homes, businesses and streets in response to rainfall or snowmelt. The Environment Agency sets strict protective permits to limit the impact of storm overflows on the environment.
Event duration monitoring (EDM)
This records the frequency and duration of storm overflow spills. They are the primary source of data on the performance of storm overflows.
Storm overflows discharge reduction plan
Defra's storm overflows discharge reduction plan sets stringent targets to protect people and the environment.
Tackling storm overflow discharges
In a sewer pipe on the River Tame in the West Midlands is a small blue box, a key piece in the puzzle to tackle sewage spills.
Thank you for visiting our new water hub. This is a pilot service. We acknowledge not everything is covered here yet, this is a new offering which will grow over the coming months.
