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Blakeney Sewage Treatment Works: sewage overflow history (SVT00289)

Review available Environment Agency annual monitoring returns for Blakeney Sewage Treatment Works. 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

127

2023

130

2024

2025

Year	Counted spills	Total spill duration (hours)	Monitor operation (%)
2025	77	451.66	99.51
2024	130	961.47	99.5
2023	127	1,212.12	100
2022	0	0	96.35

Published record details

Reference: SVT00289
Location: Severn River and Trib Estuary
Coordinates: 51.75219, -2.44888
Watercourse: River Severn
Sewerage company: Severn Trent Water
Asset type: Inlet SO at WwTW
Permit reference: S/20/26262/R
Discharge grid reference: SO6911006040
Reporting years: 2025, 2024, 2023, 2022
Catchment: Severn River and Trib Estuary

Location

Blakeney Sewage Treatment Works
51.75219, -2.44888

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

Blakeney Sewage Treatment Works0 km Blakeney STW (Ssto)0 km Oldcroft - Old Dam Road Sps4.4 km Yorkley Slade (CSO)4.9 km Frampton STW5.2 km

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