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Calder Bank Road CSO: sewage overflow history

Review available Environment Agency annual monitoring returns for Calder Bank Road 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

2023

2024

2025

Year	Counted spills	Total spill duration (hours)	Monitor operation (%)
2025	3	2	84.28
2024	2	10	76.3
2023	3	22.25	92.71
2022	Not reported	Not reported	0
2021	Not reported	Not reported	0
2020	0	0	0

Published record details

Reference: YWS02062
Location: Calder from River Colne to River Chald
Coordinates: 53.68540, -1.63793
Watercourse: River Calder
Sewerage company: Yorkshire Water
Asset type: SO on sewer network
Permit reference: WRA9168
Discharge grid reference: SE2401021055
Reporting years: 2025, 2024, 2023, 2022, 2021, 2020
Catchment: Calder from River Colne to River Chald

Location

Calder Bank Road CSO
53.68540, -1.63793

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

South Street CSO0 km Storm overflow YWS006470.1 km Not matched in EA Consents Database0.1 km Ravens Huddersfield Rd CSO0.1 km Railway Street (B To D) CSO0.8 km

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