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Mill Lane CSO 425E6: sewage overflow history

Review available Environment Agency annual monitoring returns for Mill Lane CSO 425E6. 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

2023

2024

2025

Year	Counted spills	Total spill duration (hours)	Monitor operation (%)
2025	2	0.43	99.5
2024	3	17.47	99.35
2023	4	0.57	86
2021	54	59.83	100

Published record details

Reference: UUP01312
Location: Millingford (Newton) Brook
Coordinates: 53.45279, -2.61460
Watercourse: Newton Brook
Sewerage company: United Utilities
Asset type: SO on sewer network
Permit reference: 01STH0049
Discharge grid reference: SJ5928395291
Reporting years: 2025, 2024, 2023, 2021
Catchment: Millingford (Newton) Brook

Location

Mill Lane CSO 425E6
53.45279, -2.61460

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

Park Road North0.2 km Wargrave Road CSO0.6 km 10 Warwick Avenue CSO (42058)0.6 km Red Brow Wood CSO (42076) (Sth0071)1.8 km Lodge Lane Pumping Station2 km

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