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Minions STW: sewage overflow history

Review available Environment Agency annual monitoring returns for Minions STW. 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

184

2023

163

2024

105

2025

Year	Counted spills	Total spill duration (hours)	Monitor operation (%)
2025	105	361.97	100
2024	163	1,743.02	99.05
2023	184	2,209.9	96.85

Published record details

Reference: SBB00791
Location: Seaton
Coordinates: 50.50930, -4.45379
Watercourse: Trib Of River Seaton (S)
Sewerage company: South West Water
Asset type: Inlet SO at WwTW
Permit reference: 302132
Discharge grid reference: SX26117060
Reporting years: 2025, 2024, 2023
Catchment: Seaton

Location

Minions STW
50.50930, -4.45379

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

Minions CSO0.4 km Crowsnest STW1.4 km St Cleer Wastewater Treatment Works2.7 km Commonmoor STW2.9 km Upton Cross Combined Sewer Overflow3.2 km

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