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Hemyock Pscso/Eo: sewage overflow history

Review available Environment Agency annual monitoring returns for Hemyock Pscso/Eo. 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	5	19.09	100
2024	20	78.78	100
2023	17	44.68	100
2022	4	7.99	100
2021	Not reported	Not reported	Not reported

Published record details

Reference: SBB00564
Location: Middle Culm
Coordinates: 50.91837, -3.22709
Watercourse: River Culm (S)
Sewerage company: South West Water
Asset type: Storm discharge at pumping station
Permit reference: 201633
Discharge grid reference: ST13841393
Reporting years: 2025, 2024, 2023, 2022, 2021
Catchment: Middle Culm

Location

Hemyock Pscso/Eo
50.91837, -3.22709

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

50 Castle Park CSO0.4 km Hemyock Wastewater Treatment Works0.5 km Millmoor CSO3.8 km Culmstock Sewage Treatment Works3.9 km War Memorial CSO4.1 km

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