Sewage Tank Cleaning

Alsager WWTW: sewage overflow history

Review available Environment Agency annual monitoring returns for Alsager WWTW. 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

2021

2022

2023

2024

2025

Year	Counted spills	Total spill duration (hours)	Monitor operation (%)
2025	19	75.79	96.77
2024	46	180.16	100
2023	29	85.98	100
2022	36	88.37	100
2021	80	321.66	100

Published record details

Reference: UUP00106
Location: Kidsgrove Stream (including Day Green Stream)
Coordinates: 53.10834, -2.32090
Watercourse: Tributary Of River Dane
Sewerage company: United Utilities
Asset type: Storm tank at WwTW
Permit reference: 016810042
Discharge grid reference: SJ7861556843
Reporting years: 2025, 2024, 2023, 2022, 2021
Catchment: Kidsgrove Stream (including Day Green Stream)

Location

Alsager WWTW
53.10834, -2.32090

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

113 Hassall Rd CSO0.1 km Lawton Road Wesley Ave CSO 132Cm1.4 km Ashemores Lane Lawton Rd CSO 131Ce1.4 km 29 Cresswellshawe Rd B CSO 135671.4 km 29 Cresswellshawe Rd A CSO 135671.4 km

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