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Bridge Street Bow Street CSO: sewage overflow history

Review available Environment Agency annual monitoring returns for Bridge Street Bow Street 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

2023

2024

2025

Year	Counted spills	Total spill duration (hours)	Monitor operation (%)
2025	63	119.28	99.78
2024	70	141.5	99.75
2023	93	177.54	96.8

Published record details

Reference: UUP00319
Location: Middle Brook
Coordinates: 53.58096, -2.42876
Watercourse: Cvrt Sec Middle Brook Trib R R
Sewerage company: United Utilities
Asset type: SO on sewer network
Permit reference: 016993547
Discharge grid reference: SD7171009460
Reporting years: 2025, 2024, 2023
Catchment: Middle Brook

Location

Bridge Street Bow Street CSO
53.58096, -2.42876

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

Crown Street CSO 071Qi0.1 km Manor Street Bow Street CSO 072Es0.2 km King Street CSO 072Bv0.3 km Water Street CSO 070200.3 km Church Bank Railway Viaduct CSO0.5 km

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