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Old Coleham 1 CSO: sewage overflow history

Review available Environment Agency annual monitoring returns for Old Coleham 1 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	24	17.74	99.72
2024	58	338.94	99.88
2023	49	388.33	92.2
2022	33	67.43	98.89
2021	33	28.77	91.54
2020	57	516.12	99.69

Published record details

Reference: SVT01712
Location: Rea Bk - conf Pontesford Bk to conf R Severn
Coordinates: 52.70562, -2.74595
Watercourse: Rea Brook
Sewerage company: Severn Trent Water
Asset type: SO on sewer network
Permit reference: S/02/21027/O
Discharge grid reference: SJ4969512256
Reporting years: 2025, 2024, 2023, 2022, 2021, 2020
Catchment: Rea Bk - conf Pontesford Bk to conf R Severn

Location

Old Coleham 1 CSO
52.70562, -2.74595

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

Shrewsbury - Coleham Head (CSO)0 km CSO At Longden Coleham PS0.1 km Old Coleham Combined Sewer Overflow0.1 km Greyfriars Bridge CSO0.3 km Brook Road / Abbey Forgate CSO0.3 km

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