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Quay Lane Sewage Treatment Works: sewage overflow history

Review available Environment Agency annual monitoring returns for Quay Lane 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

182

2020

2021

2022

2023

2024

2025

Year	Counted spills	Total spill duration (hours)	Monitor operation (%)
2025	32	38.35	98.69
2024	73	167.43	76.79
2023	79	179.23	99.8
2022	44	66.62	58.69
2021	8	7.51	14.52
2020	182	292.45	99.96

Published record details

Reference: SVT01838
Location: Severn - conf R Teme to conf R Avon
Coordinates: 52.07273, -2.22726
Watercourse: River Severn
Sewerage company: Severn Trent Water
Asset type: Inlet SO at WwTW
Permit reference: S/08/26508/R
Discharge grid reference: SO8452041620
Reporting years: 2025, 2024, 2023, 2022, 2021, 2020
Catchment: Severn - conf R Teme to conf R Avon

Location

Quay Lane Sewage Treatment Works
52.07273, -2.22726

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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