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Crawford Street (Nelson) CSO 321P3: sewage overflow history

Review available Environment Agency annual monitoring returns for Crawford Street (Nelson) CSO 321P3. 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	0	0	99.98
2024	7	4.17	99.29
2023	0	0	100
2022	1	0.03	97.77
2021	2	0.17	100

Published record details

Reference: UUP00561
Location: Walverden Water
Coordinates: 53.84148, -2.21121
Watercourse: Walverden Water
Sewerage company: United Utilities
Asset type: SO on sewer network
Permit reference: 01PEN0008
Discharge grid reference: SD8620038380
Reporting years: 2025, 2024, 2023, 2022, 2021
Catchment: Walverden Water

Location

Crawford Street (Nelson) CSO 321P3
53.84148, -2.21121

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

Bradley Road CSO (328N5)0.2 km Reedyford Rd CSO (32020)0.2 km Fleet Street0.3 km Hey Street (Playground) CSO (32017)0.3 km 11 North Park Avenue CSO0.8 km

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