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Netherfield Road CSO (32019): sewage overflow history

Review available Environment Agency annual monitoring returns for Netherfield Road CSO (32019). 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	46	93.78	99.84
2024	58	113.15	99.99
2023	87	148.94	100
2022	58	65.08	98.33
2021	61	103.92	100

Published record details

Reference: UUP01375
Location: Walverden Water
Coordinates: 53.83402, -2.21132
Watercourse: Walverden Water
Sewerage company: United Utilities
Asset type: SO on sewer network
Permit reference: 017180620
Discharge grid reference: SD8619037550
Reporting years: 2025, 2024, 2023, 2022, 2021
Catchment: Walverden Water

Location

Netherfield Road CSO (32019)
53.83402, -2.21132

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

Chapel House Road (32014) CSO0.3 km Chapel House Road CSO (32014)0.3 km Walverden Park CSO0.3 km Bradley Road CSO (328N5)0.6 km Hey Street (Playground) CSO (32017)0.7 km

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