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Pillaton Wastewater Treatmemt Works: sewage overflow history

Review available Environment Agency annual monitoring returns for Pillaton Wastewater Treatmemt 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

2021

2022

2023

2024

2025

Year	Counted spills	Total spill duration (hours)	Monitor operation (%)
2025	33	452.55	100
2024	12	94.39	98.54
2023	15	142.17	100
2022	14	104.84	100
2021	85	1,130.59	100

Published record details

Reference: SBB00937
Location: Lower River Lynher
Coordinates: 50.45287, -4.31097
Watercourse: River Lynher
Sewerage company: South West Water
Asset type: Storm tank at WwTW
Permit reference: NRA-SW-6741
Discharge grid reference: SX36046400
Reporting years: 2025, 2024, 2023, 2022, 2021
Catchment: Lower River Lynher

Location

Pillaton Wastewater Treatmemt Works
50.45287, -4.31097

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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