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181 London Road CSO: sewage overflow history

Review available Environment Agency annual monitoring returns for 181 London Road 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

2021

2022

2023

2024

2025

Year	Counted spills	Total spill duration (hours)	Monitor operation (%)
2025	5	1.1	96.56
2024	32	36.53	99
2023	84	85.63	100
2022	73	96.67	97.12
2021	87	153	100

Published record details

Reference: UUP00011
Location: Dane (Wheelock to Weaver)
Coordinates: 53.25264, -2.51195
Watercourse: River Dane Via Sws
Sewerage company: United Utilities
Asset type: SO on sewer network
Permit reference: 016892203
Discharge grid reference: SJ6594072970
Reporting years: 2025, 2024, 2023, 2022, 2021
Catchment: Dane (Wheelock to Weaver)

Location

181 London Road CSO
53.25264, -2.51195

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

230 London Road CSO0.3 km Spencer Street/Darwin Street CSO0.4 km Dock Road Sps0.4 km Off Carlton Road CSO0.4 km Weir Street Combined Sewer Overflow0.4 km

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