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Derby Rd Barrows Lane CSO 203Dc: sewage overflow history

Review available Environment Agency annual monitoring returns for Derby Rd Barrows Lane CSO 203Dc. 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	2	0.63	99.38
2024	1	2.83	97.81
2023	2	0.43	100
2022	3	0.9	100
2021	8	2.03	100

Published record details

Reference: UUP00634
Location: MERSEY - Transitional
Coordinates: 53.38661, -2.69985
Watercourse: Barrows Green Brook Sws
Sewerage company: United Utilities
Asset type: SO on sewer network
Permit reference: 016920641
Discharge grid reference: SJ5355087980
Reporting years: 2025, 2024, 2023, 2022, 2021
Catchment: MERSEY - Transitional

Location

Derby Rd Barrows Lane CSO 203Dc
53.38661, -2.69985

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

Ester Street Car Park CSO 203Dr2.4 km Gorsey Lane Dans Rd CSO 201V62.8 km French Street CSO 201Uw2.8 km Dans Road Weates Close CSO 201Q22.8 km Hall Nook Combined Sewer Overflow3.2 km

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