St Helens North

Polluted by sewage 727 times in 2024 lasting 3,704 hours

Monitoring fell below 50% in some locations so could be more

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Contains OS Data © Crown copyright & database right 2021-2024
© Top of the Poops 2021-2024

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✔ means we have experimental daily data since 2023

Live data for St Helens North in 2025

So far this year (as of Apr 30, 2025, 9:15 AM) there has been 712 hours of sewage overflows

Totals for St Helens North in 2024

21 Sites polluted by United Utilities
727 sewage dumps
3,704 hours duration
That's 5.14 months. On average 2 times a day

Change Over Time

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Daily Data

We get information about overflowing CSOs since January 2025. Here is a chart of the last three months of data for St Helens North, here you can see overflows in red, the darker the red, the more the CSO overflowed that day.

Each CSO has a row, the most recent data is on the right hand side.

Monitoring Online
Monitoring Offline
Polluting
Potentially Polluting
Unknown
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Pollution Summary 2024

Here are all the reported sewage overflow totals for St Helens North in 2024. 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 2 of the total 23 CSO locations had reporting enabled for less than half the year.

Company Waterway Site Sewage Dumps Duration (Hours) Reporting %
United Utilities Sankey Brook ST HELENS STW 97 827 100
United Utilities Dean Dam LODGE LANE COMBINED SEWER OVERFLOW 39 472 99.9
United Utilities Dean Brook R Douglas DEAN WOOD CSO 86 400 97.3
United Utilities Black Brook BILLINGE SOUTH PS 36 351 100
United Utilities Sankey Canal RED BROW CSO (42076) 55 309 99.5
United Utilities Black Brook FOLDS ROAD COMBINED SEWER OVERFLOW 84 292 13.2
United Utilities Newton Brook 10 WARWICK AVENUE CSO (42058) 53 217 93.5
United Utilities Ellams Brook, Newton Brook LODGE LANE COMBINED SEWER OVERFLOW 36 198 99.2
United Utilities Black Brook Via Sws CARR MILL ROAD CSO 47 163 13.2
United Utilities Sankey Brook WHARF ROAD CSO 42077 45 155 100
United Utilities Sankey Brook MALVERN ROAD CSO (42052) 34 73 99.9
United Utilities Rainford Brook WASHWAY LANE 33 56 99.9
United Utilities Sankey Brook WEST END/ WHARF ROAD CSO 425F3 13 45 98.8
United Utilities Sankey Brook RUDD AVENUE 19 41 99.8
United Utilities Sutton Brook Via Sws BERRYS LANE COMBINED SEWER OVERFLOW 13 40 99.2
United Utilities Unknown VICARAGE ROAD 7 22 99.2
United Utilities Newton Brook MILL LANE CSO 425E6 3 17 99.3
United Utilities Unknown PENKFORD BRIDGE 15 11 98.4
United Utilities Sankey Brook WHARF ROAD CSO 3 4 95.8
United Utilities Freshwater Stteam GRANGE VALLEY 2 1 99.3
United Utilities Newton Brook WARGRAVE ROAD CSO 7 1 79.9
United Utilities Unknown PARK ROAD NORTH 0 0 73.6
United Utilities Sankey Brook GLOUCESTER STREET 0 0 88.9

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.