St Helens South and Whiston was polluted by sewage 381 times in 2023
lasting 656 hours
- but monitoring was disabled in some locations, so could be more

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Contains OS Data © Crown copyright & database right 2021-2023
© Top of the Poops 2021-2023
✔ means we have experimental daily data since 2023
Totals for St Helens South and Whiston in 2023
10 Sites polluted by United Utilities
381 sewage dumps
656 h duration
That's 27.33 days. On average 1 times a day
Change Over Time
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Pollution Summary 2023

Here are all the reported sewage overflow totals for St Helens South and Whiston in 2023. 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 constituency 1 of the total 12 CSO locations had reporting enabled for less than half the year, of which 1 had zero reporting.

Company Waterway Site Sewage Dumps Duration (Hours) Reporting %
United Utilities Longwood Mill Brook WHISTON PARK (ECCLESTON PK) CSO 46 162 100
United Utilities Rainford Brook HARESFINCH ROAD 58 130 100
United Utilities Rainford Brook SANKEY BROOK (ST HELENS) CSO 32 116 99.7
United Utilities Prescot Brook MOLYNEUX DRIVE CSO 24009 68 72 99.8
United Utilities Sutton Brook Sankey Brook GASKELL STREET CSO 50 56 100
United Utilities Hardshaw Brook WARRINGTON NEW ROAD (42060) 31 52 87.1
United Utilities Eccleston Mere ST HELENS ROAD CSO 422SZ 48 28 92.6
United Utilities Hardshaw Brook JACKSON STREET CSO 23 28 90.5
United Utilities Sutton Mill Brook LEACH LANE ST HELENS CSO 21 7 100
United Utilities Hardshaw Brook WARRINGTON NEW ROAD CSO 4 1 100
United Utilities Sutton Brook MOSS NOOK PS 0 0 100
United Utilities Unknown CRAB ST/DUKE ST 0 0 0

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. This 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.