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Ilkeston Road/Rothesay Avenue CSO: sewage overflow history

Review available Environment Agency annual monitoring returns for Ilkeston Road/Rothesay Avenue 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

2021

2022

2023

2024

2025

Year	Counted spills	Total spill duration (hours)	Monitor operation (%)
2025	18	3.77	99.98
2024	19	4.5	100
2023	22	6.09	99.1
2022	4	0.32	54.65
2021	27	6.27	94.75
2020	6	1.23	99.95

Published record details

Reference: SVT01208
Location: Leen from Day Brook to Trent
Coordinates: 52.95562, -1.18277
Watercourse: River Leen
Sewerage company: Severn Trent Water
Asset type: SO on sewer network
Permit reference: T/63/09183/O
Discharge grid reference: SK5499940117
Reporting years: 2025, 2024, 2023, 2022, 2021, 2020
Catchment: Leen from Day Brook to Trent

Location

Ilkeston Road/Rothesay Avenue CSO
52.95562, -1.18277

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

Radford - Ilkeston Road/Balfour Rd (CSO)0 km Newquay Av/Churchfield Lane Jct CSO1 km Harwill Crescent CSO1.6 km Nuthall Road CSO1.6 km Aspley - Amersham Rise (CSO)1.9 km

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