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Dagnall Wastewater Treatment Works: sewage overflow history

Review available Environment Agency annual monitoring returns for Dagnall 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

YearCounted spillsTotal spill duration (hours)Monitor operation (%)
20251763.599.99
202453460.599.48
202338222.599.82
20224725099.81
202152360.2798.07

Published record details

Reference
TWL00149
Location
Mid-Chilterns Chalk
Coordinates
51.82951, -0.55578
Watercourse
Groundwater Via Infilt System
Sewerage company
Thames Water
Asset type
Inlet SO at WwTW - with treatment
Permit reference
CTCU.0375
Discharge grid reference
SP9962015530
Reporting years
2025, 2024, 2023, 2022, 2021
Catchment
Mid-Chilterns Chalk
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