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Mh Near Bonsall Cross: sewage overflow history

Review available Environment Agency annual monitoring returns for Mh Near Bonsall Cross. 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

2020

2021

2022

2023

2024

2025

Year	Counted spills	Total spill duration (hours)	Monitor operation (%)
2025	1	0.07	98.7
2024	0	0	99.75
2023	0	0	97.8
2022	0	0	82.52
2021	1	0.01	99.31
2020	0	0	95.03

Published record details

Reference: SVT01549
Location: Derwent from Wye to Amber
Coordinates: 53.12115, -1.58456
Watercourse: River Derwent
Sewerage company: Severn Trent Water
Asset type: SO on sewer network
Permit reference: DT/2185
Discharge grid reference: SK2790058300
Reporting years: 2025, 2024, 2023, 2022, 2021, 2020
Catchment: Derwent from Wye to Amber

Location

Mh Near Bonsall Cross
53.12115, -1.58456

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

Bonsall Dale Mh At Junction0.4 km Mh At Junction Of Black Tor Road0.6 km Mh Near Cromford Mill Pond1.6 km Matlock Bath-Dale Road CSO1.8 km Matlock Bath - Dale Road (Coal Me-1.8 km

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