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Castle Cove Pumping Station: sewage overflow history

Review available Environment Agency annual monitoring returns for Castle Cove Pumping Station. 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

2022

2023

2024

2025

Year	Counted spills	Total spill duration (hours)	Monitor operation (%)
2025	2	0.82	100
2024	2	0.68	100
2023	5	4.15	100
2022	1	0.25	99.97

Published record details

Reference: WXW00233
Location: Portland Harbour
Coordinates: 50.59667, -2.45794
Watercourse: Portland Harbour
Sewerage company: Wessex Water
Asset type: Storm discharge at pumping station
Permit reference: EPRAP3923KW
Discharge grid reference: SY6768477538
Reporting years: 2025, 2024, 2023, 2022
Catchment: Portland Harbour

Location

Castle Cove Pumping Station
50.59667, -2.45794

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

Hillcrest Road Pumpimg Station0.5 km Rear Doncaster Road0.8 km Rodwell Avenue CSO1.1 km Spring Road Combined Sewer Overflow1.1 km Marlow Road Combined Sewer Overflow1.1 km

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