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St Martins Allotments CSO Hereford: sewage overflow history

Review available Environment Agency annual monitoring returns for St Martins Allotments CSO Hereford. 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

2024

2025

Year	Counted spills	Total spill duration (hours)	Monitor operation (%)
2025	31	96.25	99.92
2024	43	282.25	99.8

Published record details

Reference: DCW00109
Location: Wye - Bredwardine Br to Hampton Bishop
Coordinates: 52.05180, -2.72003
Watercourse: River Wye
Sewerage company: Dwr Cymru Welsh Water
Asset type: SO on sewer network
Permit reference: AN0078501
Discharge grid reference: SO5072239513
Reporting years: 2025, 2024
Catchment: Wye - Bredwardine Br to Hampton Bishop

Location

St Martins Allotments CSO Hereford
52.05180, -2.72003

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

Belmont Roundabout CSO0 km Greyfriars Bridge CSO0.1 km Storm overflow DCW001280.2 km Barton Road Combined Sewer Overflow0.3 km Whitecross Road CSO Hereford0.4 km

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