Sewage Tank Cleaning

Yeovil (Pen Mill) WWTW: sewage overflow history

Review available Environment Agency annual monitoring returns for Yeovil (Pen Mill) 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

2020

2021

2022

2023

2024

2025

Year	Counted spills	Total spill duration (hours)	Monitor operation (%)
2025	29	280.2	100
2024	31	299.09	100
2023	38	307.88	100
2022	29	197.4	100
2021	23	152.01	99.9
2020	32	229.04	100

Published record details

Reference: WXW01293
Location: Yeo Us Over Compton
Coordinates: 50.94408, -2.60821
Watercourse: River Yeo
Sewerage company: Wessex Water
Asset type: Storm tank at WwTW
Permit reference: 101331
Discharge grid reference: ST5736616247
Reporting years: 2025, 2024, 2023, 2022, 2021, 2020
Catchment: Yeo Us Over Compton

Location

Yeovil (Pen Mill) WWTW
50.94408, -2.60821

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

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