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Toll Road Combined Sewer Overflow: sewage overflow history

Review available Environment Agency annual monitoring returns for Toll Road 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	55	183.67	99.97
2024	63	223.09	98.12
2023	68	229.13	86.6
2022	27	36.54	99.9
2021	39	77	99.59
2020	37	49.79	99.82

Published record details

Reference: SVT02332
Location: Amber from Alfreton Brook to Derwent
Coordinates: 53.06181, -1.41170
Watercourse: Hartshay Brook
Sewerage company: Severn Trent Water
Asset type: SO on sewer network
Permit reference: T/41/45659/O
Discharge grid reference: SK3952351780
Reporting years: 2025, 2024, 2023, 2022, 2021, 2020
Catchment: Amber from Alfreton Brook to Derwent

Location

Toll Road Combined Sewer Overflow
53.06181, -1.41170

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

Padley Hall CSO0 km Pentrich Sps0.3 km Ripley Mount Pleasant CSO0.9 km Swanwick Sewage Treatment Works0.9 km Ripley - Amber Heights (SSO)0.9 km

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