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Wymondham Sewage Treatment Works: sewage overflow history

Review available Environment Agency annual monitoring returns for Wymondham Sewage Treatment Works. 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

105

2024

2025

Year	Counted spills	Total spill duration (hours)	Monitor operation (%)
2025	43	668.56	99.98
2024	105	1,831.57	99.97
2023	77	1,161.92	100
2022	27	312.53	99.96
2021	44	787.72	99.55
2020	14	131.69	99.99

Published record details

Reference: SVT02644
Location: Wymondham Brook Catchment (trib of Langham Brook)
Coordinates: 52.75643, -0.74142
Watercourse: Tributary Of River Wreake
Sewerage company: Severn Trent Water
Asset type: Inlet SO at WwTW
Permit reference: T/54/45839/R
Discharge grid reference: SK8503618389
Reporting years: 2025, 2024, 2023, 2022, 2021, 2020
Catchment: Wymondham Brook Catchment (trib of Langham Brook)

Location

Wymondham Sewage Treatment Works
52.75643, -0.74142

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

Market Overton STW4.6 km Ashwell Terminal Pumping Station4.6 km Whissendine Sewage Pumping Station4.6 km Freeby Sewage Treatment Works4.7 km Langham STW7 km

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