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Carr Wood Combined Sewer Overflow: sewage overflow history

Review available Environment Agency annual monitoring returns for Carr Wood 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

2021

2022

100

2023

2024

2025

Year	Counted spills	Total spill duration (hours)	Monitor operation (%)
2025	83	241.83	94.51
2024	80	314.9	99.28
2023	100	403.6	100
2022	91	352.5	98.48
2021	30	214.6	100

Published record details

Reference: UUP00411
Location: Micker Brook
Coordinates: 53.36949, -2.16708
Watercourse: Carr Brook
Sewerage company: United Utilities
Asset type: SO on sewer network
Permit reference: 016982756
Discharge grid reference: SJ8898085860
Reporting years: 2025, 2024, 2023, 2022, 2021
Catchment: Micker Brook

Location

Carr Wood Combined Sewer Overflow
53.36949, -2.16708

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.

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