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175 Wellington Hill West CSO: sewage overflow history

Review available Environment Agency annual monitoring returns for 175 Wellington Hill West 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

2022

2023

2024

2025

Year	Counted spills	Total spill duration (hours)	Monitor operation (%)
2025	11	5.73	100
2024	6	1.3	81.05
2023	8	5.2	99.97
2022	7	1.3	99.99

Published record details

Reference: WXW00012
Location: Trym - source to conf R Avon (Brist)
Coordinates: 51.49322, -2.60413
Watercourse: River Trym Via Sws
Sewerage company: Wessex Water
Asset type: SO on sewer network
Permit reference: 100472
Discharge grid reference: ST5815577315
Reporting years: 2025, 2024, 2023, 2022
Catchment: Trym - source to conf R Avon (Brist)

Location

175 Wellington Hill West CSO
51.49322, -2.60413

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

Wellington Hill West CSO0 km Bishopthorpe Road CSO0 km Harbury Road Combined Sewer Of0 km Harbury Road CSO0 km Glenwood Road CSO0 km

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