Top of the Poops | Place | Mexborough | Polluted by Yorkshire Water

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Totals for Mexborough in 2025

9 Sites polluted by Yorkshire Water

293 sewage dumps

1,654 hours duration

That's 2.3 months. 5.6 times a week, on average

Change Over Time

Constituency for Mexborough

Nearby Constituencies

Waterways in Mexborough

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Pollution Summary 2025

Here are all the reported sewage overflow totals for Mexborough in 2025. Sometimes sewage can be being dumped for months at a time.

Reporting refers to how much of the time the monitoring was active. In this place all the declared CSO Combined Sewage Overflow - a device that, when operating, pours combined rainwater & sewage into a waterway s appeared to have monitoring enabled for more than 50% of the year

Company	Waterway	Site	Sewage Dumps	Duration (Hours)	Reporting %
Yorkshire Water	River Don	SWINTON SEWAGE TREATMENT WORKS	106	800	85.7
Yorkshire Water	River Dearne	BOLTON ON DEARNE STW	49	323	99.75
Yorkshire Water	River Don Via Public Sewer	BRITAIN STREET CSO	41	143	100
Yorkshire Water	River Don	DENABY SEWAGE TREATMENT WORKS	32	134	100
Yorkshire Water	River Don	FERRYBOAT LANE SEWAGE PUMPING STN	13	96	100
Yorkshire Water	River Don Via Pubic Sewer	SWINTON ROAD CSO	25	75	100
Yorkshire Water	River Dearne	PASTURES ROAD SPS	9	51	100
Yorkshire Water	River Don	GREYS BRIDGE CSO	3	20	100
Yorkshire Water	River Dearne	HARLINGTON ROAD CSO	15	9	100

Data Sources & Accuracy

EDM (Event Duration Monitoring) data and Consented Discharges to Controlled Waters with Conditions from Environment Agency & Data Map Wales, and Scottish Water

Experimental derived data from Thames Water API, Some data may be missing or inaccurate. Live sewage data from Stream Water API

Uses Environment Agency rainfall data from the real-time data API (Beta) - Rainfall data is delayed by up to two days.

This website is intended to provide an accurate representation of the Environment Agency data. The data is hard to use, and thus some errors may have been made. If you find something that is incorrect, please raise an issue at the GitHub issues page and we'll endeavour to fix it quickly.

This project is not associated, approved or endorsed by any of the companies whose logos you see here.

Analysing sewage pollution by the Water Industry

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© 2020-2025 Top-Of-The-Poops CC-BY-SA 4.0,
© Openstreetmap contributors, Contains OS data © Crown copyright and database right 2021-2025,
Contains Water UK National Storm Overflow Hub Data CC-BY-SA 4.0 and analysis © 2025 Top-Of-The-Poops

Some data reproduced under Open Government Licence

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