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Holloway Street CSO: sewage overflow history

Review available Environment Agency annual monitoring returns for Holloway Street 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

2021

2022

2023

2024

2025

Year	Counted spills	Total spill duration (hours)	Monitor operation (%)
2025	28	47.52	99.93
2024	29	63.35	100
2023	46	63.52	100
2022	0	0	100
2021	0	0	81

Published record details

Reference: SBB00580
Location: Exe (Creedy to Estuary)
Coordinates: 50.71653, -3.52792
Watercourse: River Exe Via Sws
Sewerage company: South West Water
Asset type: SO on sewer network
Permit reference: 201925
Discharge grid reference: SX92239188
Reporting years: 2025, 2024, 2023, 2022, 2021
Catchment: Exe (Creedy to Estuary)

Location

Holloway Street CSO
50.71653, -3.52792

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

Temple Road CSO0 km Magdalen Road CSO0 km 19 Heavitree Road CSO0 km 14 Clifton Road CSO0 km Paris Street CSO0 km

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