Sefton Central was polluted by sewage 656 times in 2024
lasting 2,563 hours

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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 Sefton Central in 2025
So far this year (as of Apr 16, 2025, 5:45 PM) there has been 731 hours of sewage overflows
Totals for Sefton Central in 2024
13 Sites polluted by United Utilities
656 sewage dumps
2,563 h duration
That's 3.56 months. On average 1.8 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 Sefton Central, 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
Daily data is experimental and data is not guaranteed to be accurate. Please inform us of any issue, we will fix.

Pollution Summary 2024

Here are all the reported sewage overflow totals for Sefton Central 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 0 of the total 14 CSO locations had reporting enabled for less than half the year, of which 0 had zero reporting.

Company Waterway Site Sewage Dumps Duration (Hours) Reporting %
United Utilities River Mersey Estuary OS 49 ST ANDREWS ROAD CSO 38028 109 714 99.3
United Utilities River Alt FORMBY WASTEWATER TREATMENT WORKS 80 681 100
United Utilities River Mersey Estuary OPPOSITE 53 MOOR LANE CSO 382G6 134 403 99
United Utilities River Mersey Estuary O/S51 MOORLAND AVE CSO 382G6 126 336 98.8
United Utilities River Mersey Estuary COLLEGE ROAD ESHE ROAD CSO 38109 59 132 99.2
United Utilities Hunts Brook THORNTON PUMPING STATION THRTN 24 118 100
United Utilities River Mersey Estuary DIBBS LANE CSO 381RT 58 92 99
United Utilities River Alt MELLING WWTW 9 39 99.9
United Utilities River Mersey Estuary O/S 107 LIVERPOOL ROAD CSO 382D3 27 30 86.8
United Utilities River Mersey Estuary OUTSIDE 16 CORONATION RD CSO 381PQ 12 6 99.3
United Utilities River Mersey Estuary DIBBS LANE CSO 381RT 8 3 90.2
United Utilities River Mersey Estuary THE BYPASS/LPOOL RD JUNCT CSO 382UR 5 2 26.4
United Utilities Maghull Brook REAR 23 LIVERPOOL ROAD NORTH CSO 5 0 74.5
United Utilities Moor Hey Brook BRIDGE RD JCT COPY LANE 0 0 78.4

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.