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Slades Hill PS: sewage overflow history

Review available Environment Agency annual monitoring returns for Slades Hill PS. 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

2023

2024

2025

Year	Counted spills	Total spill duration (hours)	Monitor operation (%)
2025	0	0	100
2024	2	1.5	99.81
2023	2	3.75	99.94
2022	0	0	100

Published record details

Reference: WXW01000
Location: Bow Brook North
Coordinates: 51.00563, -2.41969
Watercourse: Bow Brook(S)
Sewerage company: Wessex Water
Asset type: Storm discharge at pumping station
Permit reference: 401653
Discharge grid reference: ST7065023000
Reporting years: 2025, 2024, 2023, 2022
Catchment: Bow Brook North

Location

Slades Hill PS
51.00563, -2.41969

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

Templecombe Combined Sewer Overflow0.5 km Templecombe STW0.8 km Charlton Horethorne WWTW3.7 km Henstridge Pumping Station3.9 km Wincanton Water Recycling Centre4.4 km

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