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Gerrard Close CSO: sewage overflow history

Review available Environment Agency annual monitoring returns for Gerrard Close CSO. Compare reported spill counts, total duration and monitor operation by year, with source details and gaps in the series identified.

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Annual monitoring returns

2020

2021

2022

2023

2024

2025

Year	Counted spills	Total spill duration (hours)	Monitor operation (%)
2025	0	0	99.99
2024	1	0.18	99.93
2023	0	0	100
2022	0	0	99.73
2021	0	0	99.6
2020	1	0.06	99.61

Published record details

Reference: SVT00946
Location: Hockley Brook Catchment (trib of Rea)
Coordinates: 52.49773, -1.90663
Watercourse: Hockley Brook
Sewerage company: Severn Trent Water
Asset type: SO on sewer network
Permit reference: T/09/21293/O
Discharge grid reference: SP0643688873
Reporting years: 2025, 2024, 2023, 2022, 2021, 2020
Catchment: Hockley Brook Catchment (trib of Rea)

Location

Gerrard Close CSO
52.49773, -1.90663

Understanding annual storm overflow figures

The Environment Agency's annual returns report storm overflow monitoring information supplied by water companies. Spill counts use the regulatory 12/24-hour block method, so a counted spill is not necessarily a single uninterrupted discharge. Duration is the reported total time in spill, rather than the volume of sewage discharged. Monitor operation indicates the percentage of the reporting period for which the monitor operated. Missing values, incomplete monitoring and changes in recorded outlet details can affect comparisons between years. These annual figures describe historical reporting periods, not live discharge conditions or the cause of sewage problems at an individual property.

Nearby records

Ventnor Avenue CSO0 km Smith Street/Hockley Street Jct CSO0.2 km Hunters Vale CSO0.5 km Newtown - Smith St/Well St (CSO)0.6 km Milton Street CSO0.7 km

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