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Cowesby Sewage Treatment Works: sewage overflow history

Review available Environment Agency annual monitoring returns for Cowesby 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

2020

2021

2022

2023

2024

2025

Year	Counted spills	Total spill duration (hours)	Monitor operation (%)
2025	39	446.75	98.83
2024	56	748	100
2023	53	683.42	99.05
2022	41	378.42	99.45
2021	65	617.17	99.88
2020	53	534.8	98.64

Published record details

Reference: YWS00350
Location: Broad Beck from Source to Cod Beck
Coordinates: 54.29946, -1.28776
Watercourse: Unnamed Trib Of Little Beck
Sewerage company: Yorkshire Water
Asset type: Inlet SO at WwTW
Permit reference: 27/23/0215
Discharge grid reference: SE4645089550
Reporting years: 2025, 2024, 2023, 2022, 2021, 2020
Catchment: Broad Beck from Source to Cod Beck

Location

Cowesby Sewage Treatment Works
54.29946, -1.28776

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

Nether Silton CSO2.7 km Felixkirk Sewage Treatment Works4.9 km Thornton-Le-Beans CSO6.8 km Otterington Road SSO7.6 km St James Green Sps8.1 km

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