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St Johns Street Pumping Station: sewage overflow history

Review available Environment Agency annual monitoring returns for St Johns Street 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	35	126	100
2024	65	283.77	100
2023	71	253.37	100
2022	30	29.73	100

Published record details

Reference: WXW01042
Location: Tetbury Avon - unnamed trib to conf Sherston Avon
Coordinates: 51.58257, -2.09359
Watercourse: River Avon (Tetbury Branch)
Sewerage company: Wessex Water
Asset type: Storm discharge at pumping station
Permit reference: 012855
Discharge grid reference: ST9361287083
Reporting years: 2025, 2024, 2023, 2022
Catchment: Tetbury Avon - unnamed trib to conf Sherston Avon

Location

St Johns Street Pumping Station
51.58257, -2.09359

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

St. Johns Bridge CSO0.2 km Parliament Row CSO0.3 km Harpers Lane CSO0.7 km Burton Hill PS0.7 km Malmesbury WWTW0.7 km

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