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Darley Dale - Church Road (CSO): sewage overflow history

Review available Environment Agency annual monitoring returns for Darley Dale - Church 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

2023

2024

2025

Year	Counted spills	Total spill duration (hours)	Monitor operation (%)
2025	32	50.87	99.87
2024	24	3.66	99.99
2023	35	76.65	97.9

Published record details

Reference: SVT00735
Location: Derwent from Wye to Amber
Coordinates: 53.15930, -1.60298
Watercourse: River Derwent
Sewerage company: Severn Trent Water
Asset type: SO on sewer network
Permit reference: Not reported
Published permit status: Permit application submitted
Discharge grid reference: SK2664462537
Reporting years: 2025, 2024, 2023
Catchment: Derwent from Wye to Amber

Location

Darley Dale - Church Road (CSO)
53.15930, -1.60298

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

Darley Bridge CSO0.6 km CSO @ Darley Bridge Pumping Station0.8 km Two Dales - Greenway/Oddford Ln CSO0.9 km Darley Dale - Four Ends Sps1 km Station Road CSO1 km

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