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Seckar Sewage Treatment Works: sewage overflow history

Review available Environment Agency annual monitoring returns for Seckar 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

2025

Year	Counted spills	Total spill duration (hours)	Monitor operation (%)
2025	4	2	91.66
2024	Not reported	Not reported	0
2023	Not reported	Not reported	0

Published record details

Reference: YWS01025
Location: Owler Beck from Source to River Calder
Coordinates: 53.62439, -1.49970
Watercourse: Lawns Dike, Trib Newmiller Dam
Sewerage company: Yorkshire Water
Asset type: Inlet SO at WwTW
Permit reference: NPSWQD009922
Discharge grid reference: SE3318714322
Reporting years: 2025, 2024, 2023
Catchment: Owler Beck from Source to River Calder

Location

Seckar Sewage Treatment Works
53.62439, -1.49970

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

Woolley STW0.8 km Woolley STW0.8 km Newmillerdam CSO1.5 km Chapelthorpe CSO1.7 km Notton Sps2.4 km

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