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Edford Wastewater Treatment Works: sewage overflow history (WXW00401)

Review available Environment Agency annual monitoring returns for Edford Wastewater 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

2022

2023

2024

2025

Year	Counted spills	Total spill duration (hours)	Monitor operation (%)
2025	46	218.68	99.98
2024	68	385.22	98.7
2023	77	422.63	99.93
2022	29	115.42	100

Published record details

Reference: WXW00401
Location: Mells source to conf with Somerset Frome
Coordinates: 51.23616, -2.47143
Watercourse: Mells River (S)
Sewerage company: Wessex Water
Asset type: Inlet SO at WwTW
Permit reference: 010034
Discharge grid reference: ST6718448659
Reporting years: 2025, 2024, 2023, 2022
Catchment: Mells source to conf with Somerset Frome

Location

Edford Wastewater Treatment Works
51.23616, -2.47143

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

Edford Wastewater Treatment Works0 km Stoke Hill Pumping Station1.6 km Kings Head CSO1.6 km Coleford Wastewater Treatment Works2 km Coleford Wastewater Treatment Works2 km

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