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Black Rock Wastewater Pumping Statn: sewage overflow history

Review available Environment Agency annual monitoring returns for Black Rock Wastewater Pumping Statn. 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	99.64
2024	0	0	99.8
2023	0	0	98.5
2022	0	0	99.99
2021	0	0	100

Published record details

Reference: SWS00068
Location: Sussex
Coordinates: 50.81359, -0.11095
Watercourse: The English Channel
Sewerage company: Southern Water
Asset type: Storm discharge at pumping station
Permit reference: A01243
Discharge grid reference: TQ3318003260
Reporting years: 2025, 2024, 2023, 2022, 2021
Catchment: Sussex

Location

Black Rock Wastewater Pumping Statn
50.81359, -0.11095

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.

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