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Chester Le Street STW: sewage overflow history (NWL00275)

Review available Environment Agency annual monitoring returns for Chester Le Street STW. 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

2023

2024

2025

Year	Counted spills	Total spill duration (hours)	Monitor operation (%)
2025	8	12.25	98.59
2024	0	0	3.26
2023	0	0	32.4
2022	Not reported	Not reported	0
2021	Not reported	Not reported	0
2020	9	20.66	100

Published record details

Reference: NWL00275
Location: Wear DS of Lumley Park Burn to Tidal Limit
Coordinates: 54.85967, -1.56457
Watercourse: Wear
Sewerage company: Northumbrian Water
Asset type: Inlet SO at WwTW
Permit reference: 245/1242
Discharge grid reference: NZ2805051740
Reporting years: 2025, 2024, 2023, 2022, 2021, 2020
Catchment: Wear DS of Lumley Park Burn to Tidal Limit

Location

Chester Le Street STW
54.85967, -1.56457

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

Chester Le Street STW0 km Shields Road CSO0.3 km Hopgarth Gardens CSO0.3 km Lindom Avenue CSO0.4 km Cone Lane (Chester No 4) CSO0.6 km

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