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Clocktower CSO: sewage overflow history

Review available Environment Agency annual monitoring returns for Clocktower 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	8	1.68	100
2024	4	1.2	94.14
2023	0	0	24.93
2022	0	0	75
2021	0	0	100

Published record details

Reference: SBB00278
Location: Lemon
Coordinates: 50.53029, -3.61291
Watercourse: River Lemon(S)
Sewerage company: South West Water
Asset type: SO on sewer network
Permit reference: 203335
Discharge grid reference: SX85787130
Reporting years: 2025, 2024, 2023, 2022, 2021
Catchment: Lemon

Location

Clocktower CSO
50.53029, -3.61291

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

Opp 65 Highweek Road CSO0 km Bank Street CSO0.1 km Brunswick House CSO0.1 km Queen Street CSO0.3 km Market Walk CSO0.3 km

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