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Park St/Swinton Hall Road CSO: sewage overflow history

Review available Environment Agency annual monitoring returns for Park St/Swinton Hall Road CSO. 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	8	3.6	99.96
2024	8	4.87	97.48
2023	12	4.27	65.73
2022	6	0.53	100
2021	26	6.7	100

Published record details

Reference: UUP01515
Location: Folly Brook and Salteye Brook
Coordinates: 53.50613, -2.33257
Watercourse: Trib Folly Brook Via Sws
Sewerage company: United Utilities
Asset type: SO on sewer network
Permit reference: EPRTB3192VK
Discharge grid reference: SD7804001100
Reporting years: 2025, 2024, 2023, 2022, 2021
Catchment: Folly Brook and Salteye Brook

Location

Park St/Swinton Hall Road CSO
53.50613, -2.33257

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

Dorchester Rd Adj No 182 Manch CSO0.6 km In Fields Rear Of 36 East Drive CSO0.8 km Welwyn Drive CSO 370441 km Rear Of 256 Dales Brow CSO1 km Tbc1.1 km

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