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Old Gateway 1 Combined Sewer Of: sewage overflow history

Review available Environment Agency annual monitoring returns for Old Gateway 1 Combined Sewer Of. 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	43	36.3	100
2024	39	32.73	99.22
2023	49	31.76	98.22
2022	34	18.37	98
2021	46	36.33	100

Published record details

Reference: SBB00873
Location: East Okemont River
Coordinates: 50.73992, -4.00206
Watercourse: East Okement River
Sewerage company: South West Water
Asset type: SO on sewer network
Permit reference: 201727
Discharge grid reference: SX58839528
Reporting years: 2025, 2024, 2023, 2022, 2021
Catchment: East Okemont River

Location

Old Gateway 1 Combined Sewer Of
50.73992, -4.00206

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

Old Gateway 2 Combined Sewer Of0 km Taxi Rank 1 Combined Sewer Overflow0.1 km North Street CSO0.1 km The Olde Smithy CSO0.3 km Storm overflow SBB014270.4 km

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