Sewage Tank Cleaning

Greenbank Lane CSO Northwich: sewage overflow history

Review available Environment Agency annual monitoring returns for Greenbank Lane CSO Northwich. Compare reported spill counts, total duration and monitor operation by year, with source details and gaps in the series identified.

← All records

Annual monitoring returns

2021

2022

2023

2024

2025

Year	Counted spills	Total spill duration (hours)	Monitor operation (%)
2025	40	117.1	99.97
2024	56	201.5	96.07
2023	62	146.07	100
2022	27	37.27	98.5
2021	46	131.27	100

Published record details

Reference: UUP00849
Location: Weaver (Winsford Flashes to Dane)
Coordinates: 53.24674, -2.52447
Watercourse: The River Weaver
Sewerage company: United Utilities
Asset type: SO on sewer network
Permit reference: 016892403
Discharge grid reference: SJ6510072320
Reporting years: 2025, 2024, 2023, 2022, 2021
Catchment: Weaver (Winsford Flashes to Dane)

Location

Greenbank Lane CSO Northwich
53.24674, -2.52447

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

Off School Lane CSO (472Ji)0.8 km Spencer Street/Darwin Street CSO0.9 km Navigation Road CSO (472Hn)1 km School Lane/Lodge Lane CSO1.1 km 181 London Road CSO1.1 km

Sewage Tank Cleaning

Need help with sewage at a property or site?

Describe the affected area and the type of assistance you are seeking, such as sewage removal, tank cleaning or pump station cleaning. Include any information already available about the source of the problem.

Discuss sewage removal