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Tollerton Sewage Treatment Works: sewage overflow history

Review available Environment Agency annual monitoring returns for Tollerton 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	173.25	99.99
2024	56	220	99.97
2023	71	924.75	99.27
2022	40	341	99.7
2021	65	646.25	99.48
2020	96	2,030.03	99.7

Published record details

Reference: YWS00427
Location: Kyle from Derrings Beck to New Parks Beck
Coordinates: 54.07824, -1.22048
Watercourse: Sidings Drain
Sewerage company: Yorkshire Water
Asset type: Storm tank at WwTW
Permit reference: 27/24/0321
Discharge grid reference: SE5110064983
Reporting years: 2025, 2024, 2023, 2022, 2021, 2020
Catchment: Kyle from Derrings Beck to New Parks Beck

Location

Tollerton Sewage Treatment Works
54.07824, -1.22048

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

Tollerton Bridge CSO0.6 km Tollerton Garage CSO0.9 km Cheshire Homes1.6 km Flawith Sewage Treatment Works2.7 km Easingwold Sewage Treatment Works2.7 km

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