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Old Coleham Combined Sewer Overflow: sewage overflow history

Review available Environment Agency annual monitoring returns for Old Coleham Combined Sewer Overflow. 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	27	50.77	99.98
2024	45	111.88	97.87
2023	49	430.69	100
2022	23	157.9	99.99
2021	22	122.71	99.57
2020	49	497.86	99.83

Published record details

Reference: SVT01713
Location: Rea Bk - conf Pontesford Bk to conf R Severn
Coordinates: 52.70558, -2.74397
Watercourse: Rea Brook
Sewerage company: Severn Trent Water
Asset type: SO on sewer network
Permit reference: S/02/21108/O
Discharge grid reference: SJ4982912250
Reporting years: 2025, 2024, 2023, 2022, 2021, 2020
Catchment: Rea Bk - conf Pontesford Bk to conf R Severn

Location

Old Coleham Combined Sewer Overflow
52.70558, -2.74397

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

Brook Road / Abbey Forgate CSO0.1 km Shrewsbury - Coleham Head (CSO)0.1 km Old Coleham 1 CSO0.1 km CSO At Longden Coleham PS0.2 km Shrewsbury - Scott Street (CSO)0.3 km

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